56605778 has 8 divisors (see below), whose sum is σ = 85013580. Its totient is φ = 28267920.

The previous prime is 56605777. The next prime is 56605793. The reversal of 56605778 is 87750665.

It can be written as a sum of positive squares in 2 ways, for example, as 56505289 + 100489 = 7517^2 + 317^2 .

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

It is not an unprimeable number, because it can be changed into a prime (56605777) 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, 15413 + ... + 18728.

Almost surely, 2^56605778 is an apocalyptic number.

56605778 is a deficient number, since it is larger than the sum of its proper divisors (28407802).

56605778 is a wasteful number, since it uses less digits than its factorization.

56605778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34972.

The product of its (nonzero) digits is 352800, while the sum is 44.

The square root of 56605778 is about 7523.6811468855. The cubic root of 56605778 is about 383.9608295187.

The spelling of 56605778 in words is "fifty-six million, six hundred five thousand, seven hundred seventy-eight".