56521113061 has 4 divisors (see below), whose sum is σ = 64595557792. Its totient is φ = 48446668332.

The previous prime is 56521113049. The next prime is 56521113091. The reversal of 56521113061 is 16031112565.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 56521113061 - 2⁵ = 56521113029 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56521113091) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4037222355 + ... + 4037222368.

It is an arithmetic number, because the mean of its divisors is an integer number (16148889448).

Almost surely, 2^56521113061 is an apocalyptic number.

It is an amenable number.

56521113061 is a deficient number, since it is larger than the sum of its proper divisors (8074444731).

56521113061 is an equidigital number, since it uses as much as digits as its factorization.

56521113061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8074444730.

The product of its (nonzero) digits is 5400, while the sum is 31.

The spelling of 56521113061 in words is "fifty-six billion, five hundred twenty-one million, one hundred thirteen thousand, sixty-one".