115157887 has 4 divisors (see below), whose sum is σ = 124016200. Its totient is φ = 106299576.

The previous prime is 115157873. The next prime is 115157891. The reversal of 115157887 is 788751511.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 115157887 - 2¹⁹ = 114633599 is a prime.

It is a super-2 number, since 2×115157887² = 26522677876609538, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115157897) 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 3 ways as a sum of consecutive naturals, for example, 4429137 + ... + 4429162.

It is an arithmetic number, because the mean of its divisors is an integer number (31004050).

Almost surely, 2^115157887 is an apocalyptic number.

115157887 is a deficient number, since it is larger than the sum of its proper divisors (8858313).

115157887 is an equidigital number, since it uses as much as digits as its factorization.

115157887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8858312.

The product of its digits is 78400, while the sum is 43.

The square root of 115157887 is about 10731.1642891161. The cubic root of 115157887 is about 486.5168608054.

The spelling of 115157887 in words is "one hundred fifteen million, one hundred fifty-seven thousand, eight hundred eighty-seven".