115552251 has 20 divisors (see below), whose sum is σ = 173458824. Its totient is φ = 76658400.

The previous prime is 115552237. The next prime is 115552271. The reversal of 115552251 is 152255511.

It is not a de Polignac number, because 115552251 - 2⁵ = 115552219 is a prime.

It is a super-2 number, since 2×115552251² = 26704645422334002, which contains 22 as substring.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (115552201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 13711 + ... + 20471.

Almost surely, 2^115552251 is an apocalyptic number.

115552251 is a deficient number, since it is larger than the sum of its proper divisors (57906573).

115552251 is an equidigital number, since it uses as much as digits as its factorization.

115552251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6984 (or 6975 counting only the distinct ones).

The product of its digits is 2500, while the sum is 27.

The square root of 115552251 is about 10749.5232917558. The cubic root of 115552251 is about 487.0715952348.

The spelling of 115552251 in words is "one hundred fifteen million, five hundred fifty-two thousand, two hundred fifty-one".