56388407 has 8 divisors (see below), whose sum is σ = 59326512. Its totient is φ = 53524800.

The previous prime is 56388379. The next prime is 56388427. The reversal of 56388407 is 70488365.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56388407 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56388427) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17069 + ... + 20102.

It is an arithmetic number, because the mean of its divisors is an integer number (7415814).

Almost surely, 2^56388407 is an apocalyptic number.

56388407 is a deficient number, since it is larger than the sum of its proper divisors (2938105).

56388407 is a wasteful number, since it uses less digits than its factorization.

56388407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37249.

The product of its (nonzero) digits is 161280, while the sum is 41.

The square root of 56388407 is about 7509.2214643064. The cubic root of 56388407 is about 383.4687183209.

The spelling of 56388407 in words is "fifty-six million, three hundred eighty-eight thousand, four hundred seven".