56787858 has 32 divisors (see below), whose sum is σ = 130550400. Its totient is φ = 18276048.

The previous prime is 56787847. The next prime is 56787881. The reversal of 56787858 is 85878765.

It is a happy number.

56787858 is a `hidden beast` number, since 567 + 8 + 78 + 5 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an alternating number because its digits alternate between odd and even.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16566 + ... + 19697.

It is an arithmetic number, because the mean of its divisors is an integer number (4079700).

Almost surely, 2^56787858 is an apocalyptic number.

56787858 is a gapful number since it is divisible by the number (58) formed by its first and last digit.

56787858 is an abundant number, since it is smaller than the sum of its proper divisors (73762542).

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

56787858 is a wasteful number, since it uses less digits than its factorization.

56787858 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36303 (or 36297 counting only the distinct ones).

The product of its digits is 3763200, while the sum is 54.

The square root of 56787858 is about 7535.7718914521. The cubic root of 56787858 is about 384.3720758850.

The spelling of 56787858 in words is "fifty-six million, seven hundred eighty-seven thousand, eight hundred fifty-eight".