57316191 has 4 divisors (see below), whose sum is σ = 76421592. Its totient is φ = 38210792.

The previous prime is 57316183. The next prime is 57316201. The reversal of 57316191 is 19161375.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 57316191 - 2³ = 57316183 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57316891) 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, 9552696 + ... + 9552701.

It is an arithmetic number, because the mean of its divisors is an integer number (19105398).

Almost surely, 2^57316191 is an apocalyptic number.

57316191 is a deficient number, since it is larger than the sum of its proper divisors (19105401).

57316191 is a wasteful number, since it uses less digits than its factorization.

57316191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19105400.

The product of its digits is 5670, while the sum is 33.

The square root of 57316191 is about 7570.7457360553. The cubic root of 57316191 is about 385.5604162082.

The spelling of 57316191 in words is "fifty-seven million, three hundred sixteen thousand, one hundred ninety-one".