57242565 has 16 divisors (see below), whose sum is σ = 101764800. Its totient is φ = 30529296.

The previous prime is 57242551. The next prime is 57242579. The reversal of 57242565 is 56524275.

57242565 is a `hidden beast` number, since 57 + 2 + 42 + 565 = 666.

It is an interprime number because it is at equal distance from previous prime (57242551) and next prime (57242579).

It is not a de Polignac number, because 57242565 - 2⁸ = 57242309 is a prime.

It is a super-2 number, since 2×57242565² = 6553422495558450, which contains 22 as substring.

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, 211875 + ... + 212144.

It is an arithmetic number, because the mean of its divisors is an integer number (6360300).

Almost surely, 2^57242565 is an apocalyptic number.

It is an amenable number.

57242565 is a deficient number, since it is larger than the sum of its proper divisors (44522235).

57242565 is a wasteful number, since it uses less digits than its factorization.

57242565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 424033 (or 424027 counting only the distinct ones).

The product of its digits is 84000, while the sum is 36.

The square root of 57242565 is about 7565.8816406285. The cubic root of 57242565 is about 385.3952538319.

The spelling of 57242565 in words is "fifty-seven million, two hundred forty-two thousand, five hundred sixty-five".