57279479 has 4 divisors (see below), whose sum is σ = 57397584. Its totient is φ = 57161376.

The previous prime is 57279473. The next prime is 57279493. The reversal of 57279479 is 97497275.

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 57279479 - 2²⁰ = 56230903 is a prime.

It is a super-2 number, since 2×57279479² = 6561877429022882, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57279473) 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, 58322 + ... + 59295.

It is an arithmetic number, because the mean of its divisors is an integer number (14349396).

Almost surely, 2^57279479 is an apocalyptic number.

57279479 is a deficient number, since it is larger than the sum of its proper divisors (118105).

57279479 is a wasteful number, since it uses less digits than its factorization.

57279479 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118104.

The product of its digits is 1111320, while the sum is 50.

The square root of 57279479 is about 7568.3207516595. The cubic root of 57279479 is about 385.4780792807.

The spelling of 57279479 in words is "fifty-seven million, two hundred seventy-nine thousand, four hundred seventy-nine".