57291552 has 36 divisors (see below), whose sum is σ = 162923670. Its totient is φ = 19097088.

The previous prime is 57291541. The next prime is 57291557. The reversal of 57291552 is 25519275.

It can be written as a sum of positive squares in only one way, i.e., 37896336 + 19395216 = 6156^2 + 4404^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57291557) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 99177 + ... + 99752.

Almost surely, 2^57291552 is an apocalyptic number.

It is an amenable number.

57291552 is an abundant number, since it is smaller than the sum of its proper divisors (105632118).

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

57291552 is a wasteful number, since it uses less digits than its factorization.

57291552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198945 (or 198934 counting only the distinct ones).

The product of its digits is 31500, while the sum is 36.

The square root of 57291552 is about 7569.1183106092. The cubic root of 57291552 is about 385.5051602412.

The spelling of 57291552 in words is "fifty-seven million, two hundred ninety-one thousand, five hundred fifty-two".