57152391 has 8 divisors (see below), whose sum is σ = 77641200. Its totient is φ = 37382592.

The previous prime is 57152371. The next prime is 57152393. The reversal of 57152391 is 19325175.

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

It is a de Polignac number, because none of the positive numbers 2^k-57152391 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57152393) 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, 179566 + ... + 179883.

It is an arithmetic number, because the mean of its divisors is an integer number (9705150).

Almost surely, 2^57152391 is an apocalyptic number.

57152391 is a deficient number, since it is larger than the sum of its proper divisors (20488809).

57152391 is a wasteful number, since it uses less digits than its factorization.

57152391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 359505.

The product of its digits is 9450, while the sum is 33.

The square root of 57152391 is about 7559.9200392597. The cubic root of 57152391 is about 385.1927769037.

The spelling of 57152391 in words is "fifty-seven million, one hundred fifty-two thousand, three hundred ninety-one".