2115915 has 8 divisors (see below), whose sum is σ = 3385488. Its totient is φ = 1128480.

The previous prime is 2115877. The next prime is 2115923. The reversal of 2115915 is 5195112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2115915 - 2⁷ = 2115787 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 70516 + ... + 70545.

It is an arithmetic number, because the mean of its divisors is an integer number (423186).

2^2115915 is an apocalyptic number.

2115915 is a deficient number, since it is larger than the sum of its proper divisors (1269573).

2115915 is a wasteful number, since it uses less digits than its factorization.

2115915 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141069.

The product of its digits is 450, while the sum is 24.

The square root of 2115915 is about 1454.6185066883. The cubic root of 2115915 is about 128.3806013920.

The spelling of 2115915 in words is "two million, one hundred fifteen thousand, nine hundred fifteen".