115580551 has 4 divisors (see below), whose sum is σ = 115633504. Its totient is φ = 115527600.

The previous prime is 115580539. The next prime is 115580557. The reversal of 115580551 is 155085511.

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 115580551 - 2⁵ = 115580519 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 (115580557) 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, 23055 + ... + 27616.

It is an arithmetic number, because the mean of its divisors is an integer number (28908376).

Almost surely, 2^115580551 is an apocalyptic number.

115580551 is a deficient number, since it is larger than the sum of its proper divisors (52953).

115580551 is an equidigital number, since it uses as much as digits as its factorization.

115580551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52952.

The product of its (nonzero) digits is 5000, while the sum is 31.

The square root of 115580551 is about 10750.8395486120. The cubic root of 115580551 is about 487.1113550286. Note that the first 3 decimals are identical.

The spelling of 115580551 in words is "one hundred fifteen million, five hundred eighty thousand, five hundred fifty-one".