56157407 has 4 divisors (see below), whose sum is σ = 59113080. Its totient is φ = 53201736.

The previous prime is 56157401. The next prime is 56157419. The reversal of 56157407 is 70475165.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 70475165 = 5 ⋅14095033.

It is a cyclic number.

It is not a de Polignac number, because 56157407 - 2⁴ = 56157391 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56157401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1477808 + ... + 1477845.

It is an arithmetic number, because the mean of its divisors is an integer number (14778270).

Almost surely, 2^56157407 is an apocalyptic number.

56157407 is a deficient number, since it is larger than the sum of its proper divisors (2955673).

56157407 is a wasteful number, since it uses less digits than its factorization.

56157407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2955672.

The product of its (nonzero) digits is 29400, while the sum is 35.

The square root of 56157407 is about 7493.8245909549. The cubic root of 56157407 is about 382.9443640255.

The spelling of 56157407 in words is "fifty-six million, one hundred fifty-seven thousand, four hundred seven".