56518061 has 4 divisors (see below), whose sum is σ = 58975392. Its totient is φ = 54060732.

The previous prime is 56518043. The next prime is 56518069. The reversal of 56518061 is 16081565.

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 a de Polignac number, because none of the positive numbers 2^k-56518061 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 (56518069) 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, 1228631 + ... + 1228676.

It is an arithmetic number, because the mean of its divisors is an integer number (14743848).

Almost surely, 2^56518061 is an apocalyptic number.

It is an amenable number.

56518061 is a deficient number, since it is larger than the sum of its proper divisors (2457331).

56518061 is a wasteful number, since it uses less digits than its factorization.

56518061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2457330.

The product of its (nonzero) digits is 7200, while the sum is 32.

The square root of 56518061 is about 7517.8494930399. The cubic root of 56518061 is about 383.7623968663.

The spelling of 56518061 in words is "fifty-six million, five hundred eighteen thousand, sixty-one".