57291345 has 24 divisors (see below), whose sum is σ = 100040616. Its totient is φ = 30329088.

The previous prime is 57291329. The next prime is 57291371. The reversal of 57291345 is 54319275.

It can be written as a sum of positive squares in 4 ways, for example, as 725904 + 56565441 = 852^2 + 7521^2 .

It is not a de Polignac number, because 57291345 - 2⁴ = 57291329 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1519 + ... + 10811.

It is an arithmetic number, because the mean of its divisors is an integer number (4168359).

Almost surely, 2^57291345 is an apocalyptic number.

It is an amenable number.

57291345 is a deficient number, since it is larger than the sum of its proper divisors (42749271).

57291345 is a wasteful number, since it uses less digits than its factorization.

57291345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9441 (or 9438 counting only the distinct ones).

The product of its digits is 37800, while the sum is 36.

The square root of 57291345 is about 7569.1046366132. The cubic root of 57291345 is about 385.5046959513.

The spelling of 57291345 in words is "fifty-seven million, two hundred ninety-one thousand, three hundred forty-five".