57909471 has 4 divisors (see below), whose sum is σ = 77212632. Its totient is φ = 38606312.

The previous prime is 57909431. The next prime is 57909479. The reversal of 57909471 is 17490975.

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 57909471 - 2⁶ = 57909407 is a prime.

It is a super-3 number, since 3×57909471³ (a number of 24 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57909479) 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, 9651576 + ... + 9651581.

It is an arithmetic number, because the mean of its divisors is an integer number (19303158).

Almost surely, 2^57909471 is an apocalyptic number.

57909471 is a deficient number, since it is larger than the sum of its proper divisors (19303161).

57909471 is a wasteful number, since it uses less digits than its factorization.

57909471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19303160.

The product of its (nonzero) digits is 79380, while the sum is 42.

The square root of 57909471 is about 7609.8272647939. The cubic root of 57909471 is about 386.8861645972.

The spelling of 57909471 in words is "fifty-seven million, nine hundred nine thousand, four hundred seventy-one".