115233551 has 4 divisors (see below), whose sum is σ = 116528400. Its totient is φ = 113938704.

The previous prime is 115233533. The next prime is 115233553. The reversal of 115233551 is 155332511.

It is a happy number.

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 115233551 - 2¹⁰ = 115232527 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 115233551.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115233553) 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, 647291 + ... + 647468.

It is an arithmetic number, because the mean of its divisors is an integer number (29132100).

Almost surely, 2^115233551 is an apocalyptic number.

115233551 is a deficient number, since it is larger than the sum of its proper divisors (1294849).

115233551 is an equidigital number, since it uses as much as digits as its factorization.

115233551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1294848.

The product of its digits is 2250, while the sum is 26.

The square root of 115233551 is about 10734.6891431471. The cubic root of 115233551 is about 486.6233920884.

The spelling of 115233551 in words is "one hundred fifteen million, two hundred thirty-three thousand, five hundred fifty-one".