56164561 has 8 divisors (see below), whose sum is σ = 58668480. Its totient is φ = 53698512.

The previous prime is 56164541. The next prime is 56164571. The reversal of 56164561 is 16546165.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 56164561 - 2⁹ = 56164049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56164531) 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, 6415 + ... + 12388.

It is an arithmetic number, because the mean of its divisors is an integer number (7333560).

Almost surely, 2^56164561 is an apocalyptic number.

It is an amenable number.

56164561 is a deficient number, since it is larger than the sum of its proper divisors (2503919).

56164561 is a wasteful number, since it uses less digits than its factorization.

56164561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18935.

The product of its digits is 21600, while the sum is 34.

The square root of 56164561 is about 7494.3019021120. The cubic root of 56164561 is about 382.9606246745.

The spelling of 56164561 in words is "fifty-six million, one hundred sixty-four thousand, five hundred sixty-one".