115559151 has 4 divisors (see below), whose sum is σ = 154078872. Its totient is φ = 77039432.

The previous prime is 115559131. The next prime is 115559167. The reversal of 115559151 is 151955511.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 151955511 = 3 ⋅50651837.

It is a cyclic number.

It is not a de Polignac number, because 115559151 - 2⁷ = 115559023 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115559131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19259856 + ... + 19259861.

It is an arithmetic number, because the mean of its divisors is an integer number (38519718).

Almost surely, 2^115559151 is an apocalyptic number.

115559151 is a deficient number, since it is larger than the sum of its proper divisors (38519721).

115559151 is an equidigital number, since it uses as much as digits as its factorization.

115559151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38519720.

The product of its digits is 5625, while the sum is 33.

The square root of 115559151 is about 10749.8442314296. The cubic root of 115559151 is about 487.0812899172.

It can be divided in two parts, 11555 and 9151, that added together give a triangular number (20706 = T₂₀₃).

The spelling of 115559151 in words is "one hundred fifteen million, five hundred fifty-nine thousand, one hundred fifty-one".