115527621 has 16 divisors (see below), whose sum is σ = 168252480. Its totient is φ = 69928320.

The previous prime is 115527611. The next prime is 115527637. The reversal of 115527621 is 126725511.

It is not a de Polignac number, because 115527621 - 2⁵ = 115527589 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115527611) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32395 + ... + 35783.

It is an arithmetic number, because the mean of its divisors is an integer number (10515780).

Almost surely, 2^115527621 is an apocalyptic number.

115527621 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

115527621 is a deficient number, since it is larger than the sum of its proper divisors (52724859).

115527621 is a wasteful number, since it uses less digits than its factorization.

115527621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4436.

The product of its digits is 4200, while the sum is 30.

The square root of 115527621 is about 10748.3775985029. The cubic root of 115527621 is about 487.0369862859.

The spelling of 115527621 in words is "one hundred fifteen million, five hundred twenty-seven thousand, six hundred twenty-one".