57086207 has 4 divisors (see below), whose sum is σ = 59568240. Its totient is φ = 54604176.

The previous prime is 57086173. The next prime is 57086231. The reversal of 57086207 is 70268075.

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 57086207 - 2¹⁰ = 57085183 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 (57083207) 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, 1240982 + ... + 1241027.

It is an arithmetic number, because the mean of its divisors is an integer number (14892060).

Almost surely, 2^57086207 is an apocalyptic number.

57086207 is a deficient number, since it is larger than the sum of its proper divisors (2482033).

57086207 is a wasteful number, since it uses less digits than its factorization.

57086207 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2482032.

The product of its (nonzero) digits is 23520, while the sum is 35.

The square root of 57086207 is about 7555.5414762941. The cubic root of 57086207 is about 385.0440316200.

The spelling of 57086207 in words is "fifty-seven million, eighty-six thousand, two hundred seven".