56615585 has 16 divisors (see below), whose sum is σ = 73560144. Its totient is φ = 41582592.

The previous prime is 56615567. The next prime is 56615609. The reversal of 56615585 is 58551665.

It can be written as a sum of positive squares in 8 ways, for example, as 28217344 + 28398241 = 5312^2 + 5329^2 .

It is a cyclic number.

It is not a de Polignac number, because 56615585 - 2⁶ = 56615521 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10289 + ... + 14801.

It is an arithmetic number, because the mean of its divisors is an integer number (4597509).

Almost surely, 2^56615585 is an apocalyptic number.

It is an amenable number.

56615585 is a deficient number, since it is larger than the sum of its proper divisors (16944559).

56615585 is a wasteful number, since it uses less digits than its factorization.

56615585 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4724.

The product of its digits is 180000, while the sum is 41.

The square root of 56615585 is about 7524.3328607924. The cubic root of 56615585 is about 383.9830020869.

The spelling of 56615585 in words is "fifty-six million, six hundred fifteen thousand, five hundred eighty-five".