108115621 has 4 divisors (see below), whose sum is σ = 108143244. Its totient is φ = 108088000.

The previous prime is 108115619. The next prime is 108115627. The reversal of 108115621 is 126511801.

It is a happy number.

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 88623396 + 19492225 = 9414^2 + 4415^2 .

It is a cyclic number.

It is not a de Polignac number, because 108115621 - 2¹ = 108115619 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 (108115627) 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, 6730 + ... + 16171.

It is an arithmetic number, because the mean of its divisors is an integer number (27035811).

Almost surely, 2^108115621 is an apocalyptic number.

It is an amenable number.

108115621 is a deficient number, since it is larger than the sum of its proper divisors (27623).

108115621 is an equidigital number, since it uses as much as digits as its factorization.

108115621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27622.

The product of its (nonzero) digits is 480, while the sum is 25.

The square root of 108115621 is about 10397.8661753266. The cubic root of 108115621 is about 476.3901965533.

The spelling of 108115621 in words is "one hundred eight million, one hundred fifteen thousand, six hundred twenty-one".