57420717 has 8 divisors (see below), whose sum is σ = 80590560. Its totient is φ = 36265680.

The previous prime is 57420689. The next prime is 57420731. The reversal of 57420717 is 71702475.

It is a happy number.

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

It is not a de Polignac number, because 57420717 - 2⁶ = 57420653 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57420757) 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, 503634 + ... + 503747.

It is an arithmetic number, because the mean of its divisors is an integer number (10073820).

Almost surely, 2^57420717 is an apocalyptic number.

57420717 is a gapful number since it is divisible by the number (57) formed by its first and last digit.

It is an amenable number.

57420717 is a deficient number, since it is larger than the sum of its proper divisors (23169843).

57420717 is a wasteful number, since it uses less digits than its factorization.

57420717 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1007403.

The product of its (nonzero) digits is 13720, while the sum is 33.

The square root of 57420717 is about 7577.6458745444. The cubic root of 57420717 is about 385.7946526051.

The spelling of 57420717 in words is "fifty-seven million, four hundred twenty thousand, seven hundred seventeen".