57470991 has 8 divisors (see below), whose sum is σ = 80661120. Its totient is φ = 36297432.

The previous prime is 57470983. The next prime is 57471017. The reversal of 57470991 is 19907475.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 57470991 - 2³ = 57470983 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57470191) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 504075 + ... + 504188.

It is an arithmetic number, because the mean of its divisors is an integer number (10082640).

Almost surely, 2^57470991 is an apocalyptic number.

57470991 is a deficient number, since it is larger than the sum of its proper divisors (23190129).

57470991 is a wasteful number, since it uses less digits than its factorization.

57470991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1008285.

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

The square root of 57470991 is about 7580.9624059218. The cubic root of 57470991 is about 385.9072123434.

The spelling of 57470991 in words is "fifty-seven million, four hundred seventy thousand, nine hundred ninety-one".