115115621 has 8 divisors (see below), whose sum is σ = 123368064. Its totient is φ = 107133840.

The previous prime is 115115579. The next prime is 115115639. The reversal of 115115621 is 126511511.

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 115115621 - 2⁶ = 115115557 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115115681) 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, 66785 + ... + 68486.

It is an arithmetic number, because the mean of its divisors is an integer number (15421008).

Almost surely, 2^115115621 is an apocalyptic number.

It is an amenable number.

115115621 is a deficient number, since it is larger than the sum of its proper divisors (8252443).

115115621 is a wasteful number, since it uses less digits than its factorization.

115115621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135331.

The product of its digits is 300, while the sum is 23.

The square root of 115115621 is about 10729.1947973741. The cubic root of 115115621 is about 486.4573319897.

The spelling of 115115621 in words is "one hundred fifteen million, one hundred fifteen thousand, six hundred twenty-one".