57207985 has 4 divisors (see below), whose sum is σ = 68649588. Its totient is φ = 45766384.

The previous prime is 57207937. The next prime is 57207991. The reversal of 57207985 is 58970275.

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

It can be written as a sum of positive squares in 2 ways, for example, as 37173409 + 20034576 = 6097^2 + 4476^2 .

It is a cyclic number.

It is not a de Polignac number, because 57207985 - 2⁹ = 57207473 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5720794 + ... + 5720803.

It is an arithmetic number, because the mean of its divisors is an integer number (17162397).

Almost surely, 2^57207985 is an apocalyptic number.

It is an amenable number.

57207985 is a deficient number, since it is larger than the sum of its proper divisors (11441603).

57207985 is a wasteful number, since it uses less digits than its factorization.

57207985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11441602.

The product of its (nonzero) digits is 176400, while the sum is 43.

The square root of 57207985 is about 7563.5960362780. The cubic root of 57207985 is about 385.3176329661.

The spelling of 57207985 in words is "fifty-seven million, two hundred seven thousand, nine hundred eighty-five".