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53122251 = 3713316277
BaseRepresentation
bin1100101010100…
…1010011001011
310200221220000210
43022221103023
5102044403001
65134332203
71213350240
oct312512313
9120856023
1053122251
1127a93596
121595a063
13b00c5b0
1470ab5c7
1549e4dd6
hex32a94cb

53122251 has 32 divisors (see below), whose sum is σ = 90001408. Its totient is φ = 27112320.

The previous prime is 53122247. The next prime is 53122259. The reversal of 53122251 is 15222135.

53122251 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 53122251 - 22 = 53122247 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (53122259) 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 31 ways as a sum of consecutive naturals, for example, 5325 + ... + 11601.

It is an arithmetic number, because the mean of its divisors is an integer number (2812544).

Almost surely, 253122251 is an apocalyptic number.

53122251 is a deficient number, since it is larger than the sum of its proper divisors (36879157).

53122251 is a wasteful number, since it uses less digits than its factorization.

53122251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6331.

The product of its digits is 600, while the sum is 21.

The square root of 53122251 is about 7288.5012862728. The cubic root of 53122251 is about 375.9171647724.

Adding to 53122251 its reverse (15222135), we get a palindrome (68344386).

The spelling of 53122251 in words is "fifty-three million, one hundred twenty-two thousand, two hundred fifty-one".

Divisors: 1 3 7 13 21 31 39 91 93 217 273 403 651 1209 2821 6277 8463 18831 43939 81601 131817 194587 244803 571207 583761 1362109 1713621 2529631 4086327 7588893 17707417 53122251