57291087 has 16 divisors (see below), whose sum is σ = 87406592. Its totient is φ = 32698080.

The previous prime is 57291083. The next prime is 57291103. The reversal of 57291087 is 78019275.

It is not a de Polignac number, because 57291087 - 2² = 57291083 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57291083) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32037 + ... + 33777.

It is an arithmetic number, because the mean of its divisors is an integer number (5462912).

Almost surely, 2^57291087 is an apocalyptic number.

57291087 is a deficient number, since it is larger than the sum of its proper divisors (30115505).

57291087 is a wasteful number, since it uses less digits than its factorization.

57291087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3318.

The product of its (nonzero) digits is 35280, while the sum is 39.

The square root of 57291087 is about 7569.0875936271. The cubic root of 57291087 is about 385.5041172696.

The spelling of 57291087 in words is "fifty-seven million, two hundred ninety-one thousand, eighty-seven".