57216797 has 16 divisors (see below), whose sum is σ = 65378880. Its totient is φ = 49593600.

The previous prime is 57216787. The next prime is 57216799. The reversal of 57216797 is 79761275.

It is a cyclic number.

It is not a de Polignac number, because 57216797 - 2¹⁰ = 57215773 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 (57216799) 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, 25397 + ... + 27557.

It is an arithmetic number, because the mean of its divisors is an integer number (4086180).

Almost surely, 2^57216797 is an apocalyptic number.

It is an amenable number.

57216797 is a deficient number, since it is larger than the sum of its proper divisors (8162083).

57216797 is a wasteful number, since it uses less digits than its factorization.

57216797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2284.

The product of its digits is 185220, while the sum is 44.

The square root of 57216797 is about 7564.1785409917. The cubic root of 57216797 is about 385.3374160125.

The spelling of 57216797 in words is "fifty-seven million, two hundred sixteen thousand, seven hundred ninety-seven".