57731705 has 4 divisors (see below), whose sum is σ = 69278052. Its totient is φ = 46185360.

The previous prime is 57731693. The next prime is 57731753. The reversal of 57731705 is 50713775.

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 37982569 + 19749136 = 6163^2 + 4444^2 .

It is not a de Polignac number, because 57731705 - 2¹⁴ = 57715321 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, 5773166 + ... + 5773175.

It is an arithmetic number, because the mean of its divisors is an integer number (17319513).

Almost surely, 2^57731705 is an apocalyptic number.

It is an amenable number.

57731705 is a deficient number, since it is larger than the sum of its proper divisors (11546347).

57731705 is a wasteful number, since it uses less digits than its factorization.

57731705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11546346.

The product of its (nonzero) digits is 25725, while the sum is 35.

The square root of 57731705 is about 7598.1382588105. The cubic root of 57731705 is about 386.4898811188.

The spelling of 57731705 in words is "fifty-seven million, seven hundred thirty-one thousand, seven hundred five".