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52457611321031 = 729272560281679
BaseRepresentation
bin10111110110101101111010…
…10010011101111011000111
320212201220021010102211022112
423323112331102131323013
523333431141444233111
6303322405521051235
714022636340112240
oct1373267522357307
9225656233384275
1052457611321031
111579516a029484
125a72777a86b1b
1323369681cbb47
14cd4d67799cc7
1560e8221ebe8b
hex2fb5bd49dec7

52457611321031 has 8 divisors (see below), whose sum is σ = 59972038072320. Its totient is φ = 44948305138968.

The previous prime is 52457611321009. The next prime is 52457611321091. The reversal of 52457611321031 is 13012311675425.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2k-52457611321031 is a prime.

It is a super-2 number, since 2×524576113210312 (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 52457611321031.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52457611321091) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1280120351 + ... + 1280161328.

It is an arithmetic number, because the mean of its divisors is an integer number (7496504759040).

Almost surely, 252457611321031 is an apocalyptic number.

52457611321031 is a deficient number, since it is larger than the sum of its proper divisors (7514426751289).

52457611321031 is a wasteful number, since it uses less digits than its factorization.

52457611321031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2560284613.

The product of its (nonzero) digits is 151200, while the sum is 41.

Adding to 52457611321031 its reverse (13012311675425), we get a palindrome (65469922996456).

The spelling of 52457611321031 in words is "fifty-two trillion, four hundred fifty-seven billion, six hundred eleven million, three hundred twenty-one thousand, thirty-one".

Divisors: 1 7 2927 20489 2560281679 17921971753 7493944474433 52457611321031