57998717 has 4 divisors (see below), whose sum is σ = 66284256. Its totient is φ = 49713180.

The previous prime is 57998687. The next prime is 57998729. The reversal of 57998717 is 71789975.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 57998717 - 2⁸ = 57998461 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57998767) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4142759 + ... + 4142772.

It is an arithmetic number, because the mean of its divisors is an integer number (16571064).

Almost surely, 2^57998717 is an apocalyptic number.

It is an amenable number.

57998717 is a deficient number, since it is larger than the sum of its proper divisors (8285539).

57998717 is an equidigital number, since it uses as much as digits as its factorization.

57998717 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8285538.

The product of its digits is 1111320, while the sum is 53.

The square root of 57998717 is about 7615.6888723214. The cubic root of 57998717 is about 387.0848098264.

The spelling of 57998717 in words is "fifty-seven million, nine hundred ninety-eight thousand, seven hundred seventeen".