56064561 has 32 divisors (see below), whose sum is σ = 89346048. Its totient is φ = 30602880.

The previous prime is 56064559. The next prime is 56064563. The reversal of 56064561 is 16546065.

It is an interprime number because it is at equal distance from previous prime (56064559) and next prime (56064563).

It is not a de Polignac number, because 56064561 - 2¹ = 56064559 is a prime.

It is not an unprimeable number, because it can be changed into a prime (56064563) 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, 41781 + ... + 43101.

It is an arithmetic number, because the mean of its divisors is an integer number (2792064).

Almost surely, 2^56064561 is an apocalyptic number.

It is an amenable number.

56064561 is a deficient number, since it is larger than the sum of its proper divisors (33281487).

56064561 is a wasteful number, since it uses less digits than its factorization.

56064561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1421.

The product of its (nonzero) digits is 21600, while the sum is 33.

The square root of 56064561 is about 7487.6271942452. The cubic root of 56064561 is about 382.7332047928.

The spelling of 56064561 in words is "fifty-six million, sixty-four thousand, five hundred sixty-one".