56102036752981 has 2 divisors, whose sum is σ = 56102036752982. Its totient is φ = 56102036752980.

The previous prime is 56102036752933. The next prime is 56102036753011. The reversal of 56102036752981 is 18925763020165.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28080100472356 + 28021936280625 = 5299066^2 + 5293575^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56102036752981 is a prime.

It is a super-2 number, since 2×56102036752981² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56102036752921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28051018376490 + 28051018376491.

It is an arithmetic number, because the mean of its divisors is an integer number (28051018376491).

Almost surely, 2^{56102036752981} is an apocalyptic number.

It is an amenable number.

56102036752981 is a deficient number, since it is larger than the sum of its proper divisors (1).

56102036752981 is an equidigital number, since it uses as much as digits as its factorization.

56102036752981 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5443200, while the sum is 55.

The spelling of 56102036752981 in words is "fifty-six trillion, one hundred two billion, thirty-six million, seven hundred fifty-two thousand, nine hundred eighty-one".