56915279 has 4 divisors (see below), whose sum is σ = 59910840. Its totient is φ = 53919720.

The previous prime is 56915267. The next prime is 56915281. The reversal of 56915279 is 97251965.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 97251965 = 5 ⋅19450393.

It is not a de Polignac number, because 56915279 - 2²⁰ = 55866703 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 (56915219) 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, 1497752 + ... + 1497789.

It is an arithmetic number, because the mean of its divisors is an integer number (14977710).

Almost surely, 2^56915279 is an apocalyptic number.

56915279 is a deficient number, since it is larger than the sum of its proper divisors (2995561).

56915279 is a wasteful number, since it uses less digits than its factorization.

56915279 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2995560.

The product of its digits is 170100, while the sum is 44.

The square root of 56915279 is about 7544.2215635545. The cubic root of 56915279 is about 384.6593467318.

The spelling of 56915279 in words is "fifty-six million, nine hundred fifteen thousand, two hundred seventy-nine".