57153491 has 8 divisors (see below), whose sum is σ = 59343744. Its totient is φ = 54984960.

The previous prime is 57153469. The next prime is 57153497. The reversal of 57153491 is 19435175.

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

It is a cyclic number.

It is not a de Polignac number, because 57153491 - 2¹⁰ = 57152467 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (57153497) 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, 35 + ... + 10691.

It is an arithmetic number, because the mean of its divisors is an integer number (7417968).

Almost surely, 2^57153491 is an apocalyptic number.

57153491 is a deficient number, since it is larger than the sum of its proper divisors (2190253).

57153491 is a wasteful number, since it uses less digits than its factorization.

57153491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10861.

The product of its digits is 18900, while the sum is 35.

The square root of 57153491 is about 7559.9927910019. The cubic root of 57153491 is about 385.1952481292.

The spelling of 57153491 in words is "fifty-seven million, one hundred fifty-three thousand, four hundred ninety-one".