115215051 has 16 divisors (see below), whose sum is σ = 175765248. Its totient is φ = 65762400.

The previous prime is 115215049. The next prime is 115215109. The reversal of 115215051 is 150512511.

It is not a de Polignac number, because 115215051 - 2¹ = 115215049 is a prime.

It is a super-3 number, since 3×115215051³ (a number of 25 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (115215011) 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, 19696 + ... + 24866.

It is an arithmetic number, because the mean of its divisors is an integer number (10985328).

Almost surely, 2^115215051 is an apocalyptic number.

115215051 is a deficient number, since it is larger than the sum of its proper divisors (60550197).

115215051 is a wasteful number, since it uses less digits than its factorization.

115215051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6242.

The product of its (nonzero) digits is 250, while the sum is 21.

The square root of 115215051 is about 10733.8274161643. The cubic root of 115215051 is about 486.5973492838.

Adding to 115215051 its reverse (150512511), we get a palindrome (265727562).

The spelling of 115215051 in words is "one hundred fifteen million, two hundred fifteen thousand, fifty-one".