56158920 has 80 divisors (see below), whose sum is σ = 188767260. Its totient is φ = 14974848.

The previous prime is 56158913. The next prime is 56158951. The reversal of 56158920 is 2985165.

It is a happy number.

56158920 is a `hidden beast` number, since 56 + 1 + 589 + 20 = 666.

56158920 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 49533444 + 6625476 = 7038^2 + 2574^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 5427 + ... + 11906.

Almost surely, 2^56158920 is an apocalyptic number.

It is an amenable number.

56158920 is an abundant number, since it is smaller than the sum of its proper divisors (132608340).

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

56158920 is a wasteful number, since it uses less digits than its factorization.

56158920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17356 (or 17343 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 36.

The square root of 56158920 is about 7493.9255400624. The cubic root of 56158920 is about 382.9478031065.

It can be divided in two parts, 5615 and 8920, that added together give a triangular number (14535 = T₁₇₀).

The spelling of 56158920 in words is "fifty-six million, one hundred fifty-eight thousand, nine hundred twenty".