56579871 has 4 divisors (see below), whose sum is σ = 75439832. Its totient is φ = 37719912.

The previous prime is 56579849. The next prime is 56579911. The reversal of 56579871 is 17897565.

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

It is not a de Polignac number, because 56579871 - 2⁶ = 56579807 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 56579871.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56579821) 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, 9429976 + ... + 9429981.

It is an arithmetic number, because the mean of its divisors is an integer number (18859958).

Almost surely, 2^56579871 is an apocalyptic number.

56579871 is a deficient number, since it is larger than the sum of its proper divisors (18859961).

56579871 is a wasteful number, since it uses less digits than its factorization.

56579871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18859960.

The product of its digits is 529200, while the sum is 48.

The square root of 56579871 is about 7521.9592527479. The cubic root of 56579871 is about 383.9022442677.

The spelling of 56579871 in words is "fifty-six million, five hundred seventy-nine thousand, eight hundred seventy-one".