57115709 has 8 divisors (see below), whose sum is σ = 65321088. Its totient is φ = 48921840.

The previous prime is 57115649. The next prime is 57115741. The reversal of 57115709 is 90751175.

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

It is a cyclic number.

It is not a de Polignac number, because 57115709 - 2²⁰ = 56067133 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57115789) 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, 16304 + ... + 19494.

It is an arithmetic number, because the mean of its divisors is an integer number (8165136).

Almost surely, 2^57115709 is an apocalyptic number.

It is an amenable number.

57115709 is a deficient number, since it is larger than the sum of its proper divisors (8205379).

57115709 is a wasteful number, since it uses less digits than its factorization.

57115709 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5755.

The product of its (nonzero) digits is 11025, while the sum is 35.

The square root of 57115709 is about 7557.4935659913. The cubic root of 57115709 is about 385.1103501075.

The spelling of 57115709 in words is "fifty-seven million, one hundred fifteen thousand, seven hundred nine".