57115745 has 4 divisors (see below), whose sum is σ = 68538900. Its totient is φ = 45692592.

The previous prime is 57115741. The next prime is 57115757. The reversal of 57115745 is 54751175.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6932689 + 50183056 = 2633^2 + 7084^2 .

It is a cyclic number.

It is not a de Polignac number, because 57115745 - 2² = 57115741 is a prime.

It is not an unprimeable number, because it can be changed into a prime (57115741) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5711570 + ... + 5711579.

It is an arithmetic number, because the mean of its divisors is an integer number (17134725).

Almost surely, 2^57115745 is an apocalyptic number.

It is an amenable number.

57115745 is a deficient number, since it is larger than the sum of its proper divisors (11423155).

57115745 is a wasteful number, since it uses less digits than its factorization.

57115745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11423154.

The product of its digits is 24500, while the sum is 35.

The square root of 57115745 is about 7557.4959477330. The cubic root of 57115745 is about 385.1104310191.

The spelling of 57115745 in words is "fifty-seven million, one hundred fifteen thousand, seven hundred forty-five".