5581858156 has 12 divisors (see below), whose sum is σ = 11163716368. Its totient is φ = 2392224912.

The previous prime is 5581858141. The next prime is 5581858159. The reversal of 5581858156 is 6518581855.

5581858156 is an admirable number.

It is a hoax number, since the sum of its digits (52) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (5581858159) 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, 99676011 + ... + 99676066.

Almost surely, 2^5581858156 is an apocalyptic number.

It is an amenable number.

5581858156 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

5581858156 is a wasteful number, since it uses less digits than its factorization.

5581858156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199352088 (or 199352086 counting only the distinct ones).

The product of its digits is 1920000, while the sum is 52.

The square root of 5581858156 is about 74711.8341094635. The cubic root of 5581858156 is about 1773.8882841915. Note that the first 3 decimals are identical.

The spelling of 5581858156 in words is "five billion, five hundred eighty-one million, eight hundred fifty-eight thousand, one hundred fifty-six".