2115535251 has 16 divisors (see below), whose sum is σ = 2895004800. Its totient is φ = 1373684928.

The previous prime is 2115535237. The next prime is 2115535271. The reversal of 2115535251 is 1525355112.

It is not a de Polignac number, because 2115535251 - 2²² = 2111340947 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2115535271) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41241 + ... + 77018.

It is an arithmetic number, because the mean of its divisors is an integer number (180937800).

Almost surely, 2^2115535251 is an apocalyptic number.

2115535251 is a deficient number, since it is larger than the sum of its proper divisors (779469549).

2115535251 is a wasteful number, since it uses less digits than its factorization.

2115535251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118418.

The product of its digits is 7500, while the sum is 30.

The square root of 2115535251 is about 45994.9481030254. The cubic root of 2115535251 is about 1283.7292066096.

The spelling of 2115535251 in words is "two billion, one hundred fifteen million, five hundred thirty-five thousand, two hundred fifty-one".