115300621 has 4 divisors (see below), whose sum is σ = 118416892. Its totient is φ = 112184352.

The previous prime is 115300583. The next prime is 115300631. The reversal of 115300621 is 126003511.

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 52272900 + 63027721 = 7230^2 + 7939^2 .

It is a cyclic number.

It is not a de Polignac number, because 115300621 - 2¹⁵ = 115267853 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115300631) 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, 1558080 + ... + 1558153.

It is an arithmetic number, because the mean of its divisors is an integer number (29604223).

Almost surely, 2^115300621 is an apocalyptic number.

It is an amenable number.

115300621 is a deficient number, since it is larger than the sum of its proper divisors (3116271).

115300621 is an equidigital number, since it uses as much as digits as its factorization.

115300621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3116270.

The product of its (nonzero) digits is 180, while the sum is 19.

The square root of 115300621 is about 10737.8126729795. The cubic root of 115300621 is about 486.7177844494.

It can be divided in two parts, 115300 and 621, that added together give a triangular number (115921 = T₄₈₁).

The spelling of 115300621 in words is "one hundred fifteen million, three hundred thousand, six hundred twenty-one".