57321065 has 4 divisors (see below), whose sum is σ = 68785284. Its totient is φ = 45856848.

The previous prime is 57321049. The next prime is 57321079. The reversal of 57321065 is 56012375.

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 20403289 + 36917776 = 4517^2 + 6076^2 .

It is a cyclic number.

It is not a de Polignac number, because 57321065 - 2⁴ = 57321049 is a prime.

It is a Duffinian number.

It is a Curzon 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, 5732102 + ... + 5732111.

It is an arithmetic number, because the mean of its divisors is an integer number (17196321).

Almost surely, 2^57321065 is an apocalyptic number.

It is an amenable number.

57321065 is a deficient number, since it is larger than the sum of its proper divisors (11464219).

57321065 is a wasteful number, since it uses less digits than its factorization.

57321065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11464218.

The product of its (nonzero) digits is 6300, while the sum is 29.

The square root of 57321065 is about 7571.0676261674. The cubic root of 57321065 is about 385.5713448723.

The spelling of 57321065 in words is "fifty-seven million, three hundred twenty-one thousand, sixty-five".