2115172 has 24 divisors (see below), whose sum is σ = 3923136. Its totient is φ = 995808.

The previous prime is 2115133. The next prime is 2115181. The reversal of 2115172 is 2715112.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7498 + ... + 7774.

It is an arithmetic number, because the mean of its divisors is an integer number (163464).

2^2115172 is an apocalyptic number.

It is an amenable number.

2115172 is a deficient number, since it is larger than the sum of its proper divisors (1807964).

2115172 is a wasteful number, since it uses less digits than its factorization.

2115172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 387 (or 385 counting only the distinct ones).

The product of its digits is 140, while the sum is 19.

The square root of 2115172 is about 1454.3630908408. The cubic root of 2115172 is about 128.3655727552.

The spelling of 2115172 in words is "two million, one hundred fifteen thousand, one hundred seventy-two".