115387657 has 24 divisors (see below), whose sum is σ = 147470400. Its totient is φ = 88350240.

The previous prime is 115387651. The next prime is 115387663. The reversal of 115387657 is 756783511.

It is an interprime number because it is at equal distance from previous prime (115387651) and next prime (115387663).

It is not a de Polignac number, because 115387657 - 2⁷ = 115387529 is a prime.

It is a super-2 number, since 2×115387657² = 26628622775899298, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (115387651) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 48819 + ... + 51127.

It is an arithmetic number, because the mean of its divisors is an integer number (6144600).

Almost surely, 2^115387657 is an apocalyptic number.

It is an amenable number.

115387657 is a deficient number, since it is larger than the sum of its proper divisors (32082743).

115387657 is a wasteful number, since it uses less digits than its factorization.

115387657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2397 (or 2386 counting only the distinct ones).

The product of its digits is 176400, while the sum is 43.

The square root of 115387657 is about 10741.8646891496. The cubic root of 115387657 is about 486.8402218195.

The spelling of 115387657 in words is "one hundred fifteen million, three hundred eighty-seven thousand, six hundred fifty-seven".