57320641 has 6 divisors (see below), whose sum is σ = 66679170. Its totient is φ = 49131936.

The previous prime is 57320621. The next prime is 57320647. The reversal of 57320641 is 14602375.

It can be written as a sum of positive squares in only one way, i.e., 52998400 + 4322241 = 7280^2 + 2079^2 .

It is not a de Polignac number, because 57320641 - 2⁷ = 57320513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (57320647) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 584856 + ... + 584953.

It is an arithmetic number, because the mean of its divisors is an integer number (11113195).

Almost surely, 2^57320641 is an apocalyptic number.

It is an amenable number.

57320641 is a deficient number, since it is larger than the sum of its proper divisors (9358529).

57320641 is a wasteful number, since it uses less digits than its factorization.

57320641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1169823 (or 1169816 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 28.

The square root of 57320641 is about 7571.0396247807. The cubic root of 57320641 is about 385.5703941884.

The spelling of 57320641 in words is "fifty-seven million, three hundred twenty thousand, six hundred forty-one".