115161551 has 4 divisors (see below), whose sum is σ = 115372632. Its totient is φ = 114950472.

The previous prime is 115161521. The next prime is 115161593. The reversal of 115161551 is 155161511.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 155161511 = 1453 ⋅106787.

It is a cyclic number.

It is not a de Polignac number, because 115161551 - 2²⁶ = 48052687 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 115161551.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115161521) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 104720 + ... + 105813.

It is an arithmetic number, because the mean of its divisors is an integer number (28843158).

Almost surely, 2^115161551 is an apocalyptic number.

115161551 is a deficient number, since it is larger than the sum of its proper divisors (211081).

115161551 is an equidigital number, since it uses as much as digits as its factorization.

115161551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211080.

The product of its digits is 750, while the sum is 26.

The square root of 115161551 is about 10731.3350054874. The cubic root of 115161551 is about 486.5220206166.

The spelling of 115161551 in words is "one hundred fifteen million, one hundred sixty-one thousand, five hundred fifty-one".