57115575 has 72 divisors (see below), whose sum is σ = 114206976. Its totient is φ = 27048000.

The previous prime is 57115573. The next prime is 57115589. The reversal of 57115575 is 57551175.

57115575 is a `hidden beast` number, since 5 + 71 + 15 + 575 = 666.

It is not a de Polignac number, because 57115575 - 2¹ = 57115573 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57115571) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 116080 + ... + 116570.

It is an arithmetic number, because the mean of its divisors is an integer number (1586208).

Almost surely, 2^57115575 is an apocalyptic number.

57115575 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

57115575 is a deficient number, since it is larger than the sum of its proper divisors (57091401).

57115575 is a wasteful number, since it uses less digits than its factorization.

57115575 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 565 (or 557 counting only the distinct ones).

The product of its digits is 30625, while the sum is 36.

The square root of 57115575 is about 7557.4847006130. The cubic root of 57115575 is about 385.1100489363.

Subtracting 57115575 from its reverse (57551175), we obtain a square (435600 = 660²).

The spelling of 57115575 in words is "fifty-seven million, one hundred fifteen thousand, five hundred seventy-five".