57623155 has 4 divisors (see below), whose sum is σ = 69147792. Its totient is φ = 46098520.

The previous prime is 57623131. The next prime is 57623173. The reversal of 57623155 is 55132675.

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

It is a de Polignac number, because none of the positive numbers 2^k-57623155 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 57623155.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5762311 + ... + 5762320.

It is an arithmetic number, because the mean of its divisors is an integer number (17286948).

Almost surely, 2^57623155 is an apocalyptic number.

57623155 is a deficient number, since it is larger than the sum of its proper divisors (11524637).

57623155 is a wasteful number, since it uses less digits than its factorization.

57623155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11524636.

The product of its digits is 31500, while the sum is 34.

The square root of 57623155 is about 7590.9917006937. The cubic root of 57623155 is about 386.2474966934.

The spelling of 57623155 in words is "fifty-seven million, six hundred twenty-three thousand, one hundred fifty-five".