57480279 has 4 divisors (see below), whose sum is σ = 76640376. Its totient is φ = 38320184.

The previous prime is 57480271. The next prime is 57480299. The reversal of 57480279 is 97208475.

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 57480279 - 2³ = 57480271 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 57480279.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57480271) 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, 9580044 + ... + 9580049.

It is an arithmetic number, because the mean of its divisors is an integer number (19160094).

Almost surely, 2^57480279 is an apocalyptic number.

57480279 is a deficient number, since it is larger than the sum of its proper divisors (19160097).

57480279 is a wasteful number, since it uses less digits than its factorization.

57480279 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19160096.

The product of its (nonzero) digits is 141120, while the sum is 42.

The square root of 57480279 is about 7581.5749683031. The cubic root of 57480279 is about 385.9280002983.

The spelling of 57480279 in words is "fifty-seven million, four hundred eighty thousand, two hundred seventy-nine".