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53218230 = 23513612237
BaseRepresentation
bin1100101100000…
…0101110110110
310201010202200120
43023000232312
5102110440410
65140352410
71214230122
oct313005666
9121122616
1053218230
112804970a
12159a5706
13b0441a0
1470d4582
154a13570
hex32c0bb6

53218230 has 64 divisors (see below), whose sum is σ = 139866048. Its totient is φ = 12879360.

The previous prime is 53218199. The next prime is 53218261. The reversal of 53218230 is 3281235.

53218230 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (53218199) and next prime (53218261).

It is a self number, because there is not a number n which added to its sum of digits gives 53218230.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 22672 + ... + 24908.

It is an arithmetic number, because the mean of its divisors is an integer number (2185407).

Almost surely, 253218230 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 53218230, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (69933024).

53218230 is an abundant number, since it is smaller than the sum of its proper divisors (86647818).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

53218230 is a wasteful number, since it uses less digits than its factorization.

53218230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2321.

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 53218230 is about 7295.0825903481. The cubic root of 53218230 is about 376.1434255533.

Adding to 53218230 its reverse (3281235), we get a palindrome (56499465).

The spelling of 53218230 in words is "fifty-three million, two hundred eighteen thousand, two hundred thirty".

Divisors: 1 2 3 5 6 10 13 15 26 30 39 61 65 78 122 130 183 195 305 366 390 610 793 915 1586 1830 2237 2379 3965 4474 4758 6711 7930 11185 11895 13422 22370 23790 29081 33555 58162 67110 87243 136457 145405 174486 272914 290810 409371 436215 682285 818742 872430 1364570 1773941 2046855 3547882 4093710 5321823 8869705 10643646 17739410 26609115 53218230