56658871 has 4 divisors (see below), whose sum is σ = 57341592. Its totient is φ = 55976152.

The previous prime is 56658869. The next prime is 56658881. The reversal of 56658871 is 17885665.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 56658871 - 2¹ = 56658869 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 (56658881) 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, 341236 + ... + 341401.

It is an arithmetic number, because the mean of its divisors is an integer number (14335398).

Almost surely, 2^56658871 is an apocalyptic number.

56658871 is a deficient number, since it is larger than the sum of its proper divisors (682721).

56658871 is an equidigital number, since it uses as much as digits as its factorization.

56658871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 682720.

The product of its digits is 403200, while the sum is 46.

The square root of 56658871 is about 7527.2087123980. The cubic root of 56658871 is about 384.0808364793.

The spelling of 56658871 in words is "fifty-six million, six hundred fifty-eight thousand, eight hundred seventy-one".