57309844 has 6 divisors (see below), whose sum is σ = 100292234. Its totient is φ = 28654920.

The previous prime is 57309823. The next prime is 57309877. The reversal of 57309844 is 44890375.

It can be written as a sum of positive squares in only one way, i.e., 40170244 + 17139600 = 6338^2 + 4140^2 .

It is a junction number, because it is equal to n+sod(n) for n = 57309797 and 57309806.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7163727 + ... + 7163734.

Almost surely, 2^57309844 is an apocalyptic number.

It is an amenable number.

57309844 is a deficient number, since it is larger than the sum of its proper divisors (42982390).

57309844 is a wasteful number, since it uses less digits than its factorization.

57309844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14327465 (or 14327463 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 40.

The square root of 57309844 is about 7570.3265451366. The cubic root of 57309844 is about 385.5461837999.

The spelling of 57309844 in words is "fifty-seven million, three hundred nine thousand, eight hundred forty-four".