57317749 has 4 divisors (see below), whose sum is σ = 57874336. Its totient is φ = 56761164.

The previous prime is 57317677. The next prime is 57317779. The reversal of 57317749 is 94771375.

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 57317749 - 2²¹ = 55220597 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 (57317779) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 278139 + ... + 278344.

It is an arithmetic number, because the mean of its divisors is an integer number (14468584).

Almost surely, 2^57317749 is an apocalyptic number.

It is an amenable number.

57317749 is a deficient number, since it is larger than the sum of its proper divisors (556587).

57317749 is a wasteful number, since it uses less digits than its factorization.

57317749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 556586.

The product of its digits is 185220, while the sum is 43.

The square root of 57317749 is about 7570.8486314283. The cubic root of 57317749 is about 385.5639096811.

The spelling of 57317749 in words is "fifty-seven million, three hundred seventeen thousand, seven hundred forty-nine".