57512087 has 4 divisors (see below), whose sum is σ = 57618936. Its totient is φ = 57405240.

The previous prime is 57512057. The next prime is 57512131. The reversal of 57512087 is 78021575.

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

It is a cyclic number.

It is not a de Polignac number, because 57512087 - 2¹⁶ = 57446551 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57512057) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52613 + ... + 53694.

It is an arithmetic number, because the mean of its divisors is an integer number (14404734).

Almost surely, 2^57512087 is an apocalyptic number.

57512087 is a deficient number, since it is larger than the sum of its proper divisors (106849).

57512087 is a wasteful number, since it uses less digits than its factorization.

57512087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106848.

The product of its (nonzero) digits is 19600, while the sum is 35.

The square root of 57512087 is about 7583.6723953504. The cubic root of 57512087 is about 385.9991744727. Note that the first 3 decimals are identical.

The spelling of 57512087 in words is "fifty-seven million, five hundred twelve thousand, eighty-seven".