56564385 has 16 divisors (see below), whose sum is σ = 91988160. Its totient is φ = 29672640.

The previous prime is 56564381. The next prime is 56564401. The reversal of 56564385 is 58346565.

56564385 = T₈₈ + T₈₉ + ... + T₆₉₇.

It is a happy number.

It is not a de Polignac number, because 56564385 - 2² = 56564381 is a prime.

It is not an unprimeable number, because it can be changed into a prime (56564381) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29995 + ... + 31824.

It is an arithmetic number, because the mean of its divisors is an integer number (5749260).

Almost surely, 2^56564385 is an apocalyptic number.

It is an amenable number.

56564385 is a deficient number, since it is larger than the sum of its proper divisors (35423775).

56564385 is a wasteful number, since it uses less digits than its factorization.

56564385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61888.

The product of its digits is 432000, while the sum is 42.

The square root of 56564385 is about 7520.9297962420. The cubic root of 56564385 is about 383.8672161883.

The spelling of 56564385 in words is "fifty-six million, five hundred sixty-four thousand, three hundred eighty-five".