56407983 has 16 divisors (see below), whose sum is σ = 78817536. Its totient is φ = 35816000.

The previous prime is 56407961. The next prime is 56407997. The reversal of 56407983 is 38970465.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 56407983 - 2⁶ = 56407919 is a prime.

It is a super-2 number, since 2×56407983² = 6363721092256578, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56407913) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15691 + ... + 18947.

It is an arithmetic number, because the mean of its divisors is an integer number (4926096).

Almost surely, 2^56407983 is an apocalyptic number.

56407983 is a deficient number, since it is larger than the sum of its proper divisors (22409553).

56407983 is a wasteful number, since it uses less digits than its factorization.

56407983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3534.

The product of its (nonzero) digits is 181440, while the sum is 42.

The square root of 56407983 is about 7510.5248152176. The cubic root of 56407983 is about 383.5130886416.

The spelling of 56407983 in words is "fifty-six million, four hundred seven thousand, nine hundred eighty-three".