57159965 has 4 divisors (see below), whose sum is σ = 68591964. Its totient is φ = 45727968.

The previous prime is 57159959. The next prime is 57160009. The reversal of 57159965 is 56995175.

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 36711481 + 20448484 = 6059^2 + 4522^2 .

It is a cyclic number.

It is not a de Polignac number, because 57159965 - 2⁶ = 57159901 is a prime.

It is a Duffinian number.

It is a congruent 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, 5715992 + ... + 5716001.

It is an arithmetic number, because the mean of its divisors is an integer number (17147991).

Almost surely, 2^57159965 is an apocalyptic number.

It is an amenable number.

57159965 is a deficient number, since it is larger than the sum of its proper divisors (11431999).

57159965 is a wasteful number, since it uses less digits than its factorization.

57159965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11431998.

The product of its digits is 425250, while the sum is 47.

The square root of 57159965 is about 7560.4209538887. The cubic root of 57159965 is about 385.2097917720.

The spelling of 57159965 in words is "fifty-seven million, one hundred fifty-nine thousand, nine hundred sixty-five".