56121525542 has 16 divisors (see below), whose sum is σ = 84429378000. Its totient is φ = 27978438432.

The previous prime is 56121525527. The next prime is 56121525547. The reversal of 56121525542 is 24552512165.

It is a super-2 number, since 2×56121525542² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 56121525496 and 56121525505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56121525547) 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, 4150709 + ... + 4164207.

It is an arithmetic number, because the mean of its divisors is an integer number (5276836125).

Almost surely, 2^56121525542 is an apocalyptic number.

56121525542 is a deficient number, since it is larger than the sum of its proper divisors (28307852458).

56121525542 is a wasteful number, since it uses less digits than its factorization.

56121525542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19447.

The product of its digits is 120000, while the sum is 38.

The spelling of 56121525542 in words is "fifty-six billion, one hundred twenty-one million, five hundred twenty-five thousand, five hundred forty-two".