115756621 has 4 divisors (see below), whose sum is σ = 122565852. Its totient is φ = 108947392.

The previous prime is 115756601. The next prime is 115756633. The reversal of 115756621 is 126657511.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 104264521 + 11492100 = 10211^2 + 3390^2 .

It is a cyclic number.

It is not a de Polignac number, because 115756621 - 2¹⁹ = 115232333 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115756601) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3404590 + ... + 3404623.

It is an arithmetic number, because the mean of its divisors is an integer number (30641463).

Almost surely, 2^115756621 is an apocalyptic number.

It is an amenable number.

115756621 is a deficient number, since it is larger than the sum of its proper divisors (6809231).

115756621 is an equidigital number, since it uses as much as digits as its factorization.

115756621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6809230.

The product of its digits is 12600, while the sum is 34.

The square root of 115756621 is about 10759.0250952398. The cubic root of 115756621 is about 487.3585770795.

The spelling of 115756621 in words is "one hundred fifteen million, seven hundred fifty-six thousand, six hundred twenty-one".