57779055 has 16 divisors (see below), whose sum is σ = 102718560. Its totient is φ = 30815424.

The previous prime is 57779023. The next prime is 57779081. The reversal of 57779055 is 55097775.

57779055 is a `hidden beast` number, since 577 + 79 + 0 + 5 + 5 = 666.

It is not a de Polignac number, because 57779055 - 2⁵ = 57779023 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 57779055.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 213862 + ... + 214131.

It is an arithmetic number, because the mean of its divisors is an integer number (6419910).

Almost surely, 2^57779055 is an apocalyptic number.

57779055 is a deficient number, since it is larger than the sum of its proper divisors (44939505).

57779055 is a wasteful number, since it uses less digits than its factorization.

57779055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 428007 (or 428001 counting only the distinct ones).

The product of its (nonzero) digits is 385875, while the sum is 45.

The square root of 57779055 is about 7601.2535150461. The cubic root of 57779055 is about 386.5955151317.

The spelling of 57779055 in words is "fifty-seven million, seven hundred seventy-nine thousand, fifty-five".