117858558 has 24 divisors (see below), whose sum is σ = 248780808. Its totient is φ = 37217808.

The previous prime is 117858557. The next prime is 117858593. The reversal of 117858558 is 855858711.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117858551) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 25041 + ... + 29372.

It is an arithmetic number, because the mean of its divisors is an integer number (10365867).

Almost surely, 2^117858558 is an apocalyptic number.

117858558 is an abundant number, since it is smaller than the sum of its proper divisors (130922250).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

117858558 is a wasteful number, since it uses less digits than its factorization.

117858558 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54456 (or 54437 counting only the distinct ones).

The product of its digits is 448000, while the sum is 48.

The square root of 117858558 is about 10856.2681433354. The cubic root of 117858558 is about 490.2907589899.

The spelling of 117858558 in words is "one hundred seventeen million, eight hundred fifty-eight thousand, five hundred fifty-eight".