56572278 has 32 divisors (see below), whose sum is σ = 129669120. Its totient is φ = 16118400.

The previous prime is 56572273. The next prime is 56572283. The reversal of 56572278 is 87227565.

It is an interprime number because it is at equal distance from previous prime (56572273) and next prime (56572283).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56572273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15163 + ... + 18521.

It is an arithmetic number, because the mean of its divisors is an integer number (4052160).

Almost surely, 2^56572278 is an apocalyptic number.

56572278 is an abundant number, since it is smaller than the sum of its proper divisors (73096842).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

56572278 is a wasteful number, since it uses less digits than its factorization.

56572278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3772.

The product of its digits is 235200, while the sum is 42.

The square root of 56572278 is about 7521.4545135898. The cubic root of 56572278 is about 383.8850703146.

The spelling of 56572278 in words is "fifty-six million, five hundred seventy-two thousand, two hundred seventy-eight".