115433551 has 4 divisors (see below), whose sum is σ = 117889632. Its totient is φ = 112977472.

The previous prime is 115433537. The next prime is 115433557. The reversal of 115433551 is 155334511.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 155334511 = 227 ⋅684293.

It is not a de Polignac number, because 115433551 - 2¹⁵ = 115400783 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115433557) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1227970 + ... + 1228063.

It is an arithmetic number, because the mean of its divisors is an integer number (29472408).

Almost surely, 2^115433551 is an apocalyptic number.

115433551 is a deficient number, since it is larger than the sum of its proper divisors (2456081).

115433551 is an equidigital number, since it uses as much as digits as its factorization.

115433551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2456080.

The product of its digits is 4500, while the sum is 28.

The square root of 115433551 is about 10744.0006980640. Note that the first 3 decimals coincide. The cubic root of 115433551 is about 486.9047581375.

The spelling of 115433551 in words is "one hundred fifteen million, four hundred thirty-three thousand, five hundred fifty-one".