57055213557 has 24 divisors (see below), whose sum is σ = 86014251648. Its totient is φ = 36375424800.

The previous prime is 57055213549. The next prime is 57055213571. The reversal of 57055213557 is 75531255075.

57055213557 is a `hidden beast` number, since 5 + 70 + 5 + 5 + 21 + 3 + 557 = 666.

It is not a de Polignac number, because 57055213557 - 2³ = 57055213549 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57055213597) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1062832 + ... + 1115222.

It is an arithmetic number, because the mean of its divisors is an integer number (3583927152).

Almost surely, 2^57055213557 is an apocalyptic number.

It is an amenable number.

57055213557 is a deficient number, since it is larger than the sum of its proper divisors (28959038091).

57055213557 is a wasteful number, since it uses less digits than its factorization.

57055213557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57681 (or 57678 counting only the distinct ones).

The product of its (nonzero) digits is 918750, while the sum is 45.

The spelling of 57055213557 in words is "fifty-seven billion, fifty-five million, two hundred thirteen thousand, five hundred fifty-seven".