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52130356 = 2261213649
BaseRepresentation
bin1100011011011…
…1001000110100
310122002111101221
43012313020310
5101321132411
65101200124
71202046355
oct306671064
9118074357
1052130356
1127476343
1215560044
13aa52c85
146ccdd2c
15489b071
hex31b7234

52130356 has 12 divisors (see below), whose sum is σ = 92724100. Its totient is φ = 25637760.

The previous prime is 52130339. The next prime is 52130359. The reversal of 52130356 is 65303125.

It is a happy number.

52130356 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 9672100 + 42458256 = 3110^2 + 6516^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 52130356.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52130359) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 106581 + ... + 107068.

Almost surely, 252130356 is an apocalyptic number.

It is an amenable number.

52130356 is a deficient number, since it is larger than the sum of its proper divisors (40593744).

52130356 is a wasteful number, since it uses less digits than its factorization.

52130356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213714 (or 213712 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 25.

The square root of 52130356 is about 7220.1354557931. The cubic root of 52130356 is about 373.5627497949.

The spelling of 52130356 in words is "fifty-two million, one hundred thirty thousand, three hundred fifty-six".

Divisors: 1 2 4 61 122 244 213649 427298 854596 13032589 26065178 52130356