57816939 has 8 divisors (see below), whose sum is σ = 77481360. Its totient is φ = 38348576.

The previous prime is 57816937. The next prime is 57816961. The reversal of 57816939 is 93961875.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 57816939 - 2¹ = 57816937 is a prime.

It is not an unprimeable number, because it can be changed into a prime (57816937) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48324 + ... + 49505.

It is an arithmetic number, because the mean of its divisors is an integer number (9685170).

Almost surely, 2^57816939 is an apocalyptic number.

57816939 is a deficient number, since it is larger than the sum of its proper divisors (19664421).

57816939 is a wasteful number, since it uses less digits than its factorization.

57816939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98029.

The product of its digits is 408240, while the sum is 48.

The square root of 57816939 is about 7603.7450641115. The cubic root of 57816939 is about 386.6799897147.

It can be divided in two parts, 5781 and 6939, that added together give a triangular number (12720 = T₁₅₉).

The spelling of 57816939 in words is "fifty-seven million, eight hundred sixteen thousand, nine hundred thirty-nine".