57985993 has 16 divisors (see below), whose sum is σ = 66361680. Its totient is φ = 50270976.

The previous prime is 57985987. The next prime is 57986009. The reversal of 57985993 is 39958975.

It can be written as a sum of positive squares in 8 ways, for example, as 28224 + 57957769 = 168^2 + 7613^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-57985993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (57985943) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11871 + ... + 16027.

It is an arithmetic number, because the mean of its divisors is an integer number (4147605).

Almost surely, 2^57985993 is an apocalyptic number.

It is an amenable number.

57985993 is a deficient number, since it is larger than the sum of its proper divisors (8375687).

57985993 is a wasteful number, since it uses less digits than its factorization.

57985993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4236.

The product of its digits is 3061800, while the sum is 55.

The square root of 57985993 is about 7614.8534457335. The cubic root of 57985993 is about 387.0565009971.

The spelling of 57985993 in words is "fifty-seven million, nine hundred eighty-five thousand, nine hundred ninety-three".