2115251 has 8 divisors (see below), whose sum is σ = 2243520. Its totient is φ = 1988712.

The previous prime is 2115233. The next prime is 2115277. The reversal of 2115251 is 1525112.

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

It is a cyclic number.

It is not a de Polignac number, because 2115251 - 2⁶ = 2115187 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2115221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2756 + ... + 3438.

It is an arithmetic number, because the mean of its divisors is an integer number (280440).

2^2115251 is an apocalyptic number.

2115251 is a deficient number, since it is larger than the sum of its proper divisors (128269).

2115251 is a wasteful number, since it uses less digits than its factorization.

2115251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 865.

The product of its digits is 100, while the sum is 17.

The square root of 2115251 is about 1454.3902502423. The cubic root of 2115251 is about 128.3671708528.

The spelling of 2115251 in words is "two million, one hundred fifteen thousand, two hundred fifty-one".