115259661 has 24 divisors (see below), whose sum is σ = 183246336. Its totient is φ = 69229440.

The previous prime is 115259633. The next prime is 115259663. The reversal of 115259661 is 166952511.

115259661 is a `hidden beast` number, since 1 + 1 + 5 + 2 + 596 + 61 = 666.

It is not a de Polignac number, because 115259661 - 2⁶ = 115259597 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115259663) 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, 6036 + ... + 16338.

It is an arithmetic number, because the mean of its divisors is an integer number (7635264).

Almost surely, 2^115259661 is an apocalyptic number.

115259661 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

115259661 is a deficient number, since it is larger than the sum of its proper divisors (67986675).

115259661 is a wasteful number, since it uses less digits than its factorization.

115259661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10433 (or 10430 counting only the distinct ones).

The product of its digits is 16200, while the sum is 36.

The square root of 115259661 is about 10735.9052249915. The cubic root of 115259661 is about 486.6601428933.

The spelling of 115259661 in words is "one hundred fifteen million, two hundred fifty-nine thousand, six hundred sixty-one".