56390751 has 24 divisors (see below), whose sum is σ = 87547824. Its totient is φ = 34848000.

The previous prime is 56390743. The next prime is 56390783. The reversal of 56390751 is 15709365.

It is a happy number.

56390751 is a `hidden beast` number, since 563 + 90 + 7 + 5 + 1 = 666.

It is not a de Polignac number, because 56390751 - 2³ = 56390743 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56490751) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7501 + ... + 13001.

It is an arithmetic number, because the mean of its divisors is an integer number (3647826).

Almost surely, 2^56390751 is an apocalyptic number.

56390751 is a gapful number since it is divisible by the number (51) formed by its first and last digit.

56390751 is a deficient number, since it is larger than the sum of its proper divisors (31157073).

56390751 is a wasteful number, since it uses less digits than its factorization.

56390751 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5591 (or 5588 counting only the distinct ones).

The product of its (nonzero) digits is 28350, while the sum is 36.

The square root of 56390751 is about 7509.3775374528. The cubic root of 56390751 is about 383.4740316957.

The spelling of 56390751 in words is "fifty-six million, three hundred ninety thousand, seven hundred fifty-one".