57742217 has 16 divisors (see below), whose sum is σ = 66189312. Its totient is φ = 49900800.

The previous prime is 57742207. The next prime is 57742247. The reversal of 57742217 is 71224775.

It is a cyclic number.

It is not a de Polignac number, because 57742217 - 2⁸ = 57741961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (57742207) 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, 49592 + ... + 50742.

It is an arithmetic number, because the mean of its divisors is an integer number (4136832).

Almost surely, 2^57742217 is an apocalyptic number.

It is an amenable number.

57742217 is a deficient number, since it is larger than the sum of its proper divisors (8447095).

57742217 is a wasteful number, since it uses less digits than its factorization.

57742217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1408.

The product of its digits is 27440, while the sum is 35.

The square root of 57742217 is about 7598.8299757265. The cubic root of 57742217 is about 386.5133375256.

The spelling of 57742217 in words is "fifty-seven million, seven hundred forty-two thousand, two hundred seventeen".