51111005600557 has 32 divisors (see below), whose sum is σ = 60750227865600. Its totient is φ = 42077644473600.

The previous prime is 51111005600521. The next prime is 51111005600573. The reversal of 51111005600557 is 75500650011115.

It is a cyclic number.

It is not a de Polignac number, because 51111005600557 - 2²⁷ = 51110871382829 is a prime.

It is a super-2 number, since 2×51111005600557² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51111005600257) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 93806757 + ... + 94350037.

It is an arithmetic number, because the mean of its divisors is an integer number (1898444620800).

Almost surely, 2^{51111005600557} is an apocalyptic number.

It is an amenable number.

51111005600557 is a deficient number, since it is larger than the sum of its proper divisors (9639222265043).

51111005600557 is a wasteful number, since it uses less digits than its factorization.

51111005600557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 546577.

The product of its (nonzero) digits is 26250, while the sum is 37.

The spelling of 51111005600557 in words is "fifty-one trillion, one hundred eleven billion, five million, six hundred thousand, five hundred fifty-seven".