115455551 has 4 divisors (see below), whose sum is σ = 122247072. Its totient is φ = 108664032.

The previous prime is 115455541. The next prime is 115455569. The reversal of 115455551 is 155554511.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-115455551 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 (115455541) 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, 3395735 + ... + 3395768.

It is an arithmetic number, because the mean of its divisors is an integer number (30561768).

Almost surely, 2^115455551 is an apocalyptic number.

115455551 is a deficient number, since it is larger than the sum of its proper divisors (6791521).

115455551 is an equidigital number, since it uses as much as digits as its factorization.

115455551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6791520.

The product of its digits is 12500, while the sum is 32.

The square root of 115455551 is about 10745.0244764728. The cubic root of 115455551 is about 486.9356885563.

The spelling of 115455551 in words is "one hundred fifteen million, four hundred fifty-five thousand, five hundred fifty-one".