115557478 has 4 divisors (see below), whose sum is σ = 173336220. Its totient is φ = 57778738.

The previous prime is 115557461. The next prime is 115557493. The reversal of 115557478 is 874755511.

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

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 28889368 + ... + 28889371.

It is an arithmetic number, because the mean of its divisors is an integer number (43334055).

Almost surely, 2^115557478 is an apocalyptic number.

115557478 is a deficient number, since it is larger than the sum of its proper divisors (57778742).

115557478 is an equidigital number, since it uses as much as digits as its factorization.

115557478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57778741.

The product of its digits is 196000, while the sum is 43.

The square root of 115557478 is about 10749.7664160669. The cubic root of 115557478 is about 487.0789393434.

The spelling of 115557478 in words is "one hundred fifteen million, five hundred fifty-seven thousand, four hundred seventy-eight".