57147472 has 20 divisors (see below), whose sum is σ = 117236916. Its totient is φ = 26892800.

The previous prime is 57147469. The next prime is 57147491. The reversal of 57147472 is 27474175.

It can be written as a sum of positive squares in 2 ways, for example, as 24245776 + 32901696 = 4924^2 + 5736^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 104779 + ... + 105322.

Almost surely, 2^57147472 is an apocalyptic number.

It is an amenable number.

57147472 is an abundant number, since it is smaller than the sum of its proper divisors (60089444).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

57147472 is a wasteful number, since it uses less digits than its factorization.

57147472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210126 (or 210120 counting only the distinct ones).

The product of its digits is 54880, while the sum is 37.

The square root of 57147472 is about 7559.5946981303. The cubic root of 57147472 is about 385.1817256447.

The spelling of 57147472 in words is "fifty-seven million, one hundred forty-seven thousand, four hundred seventy-two".