156081556 has 24 divisors (see below), whose sum is σ = 290848320. Its totient is φ = 73034112.

The previous prime is 156081533. The next prime is 156081557. The reversal of 156081556 is 655180651.

156081556 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×156081556² = 48722904246762272, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (156081557) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5761 + ... + 18583.

It is an arithmetic number, because the mean of its divisors is an integer number (12118680).

Almost surely, 2^156081556 is an apocalyptic number.

It is an amenable number.

156081556 is a deficient number, since it is larger than the sum of its proper divisors (134766764).

156081556 is a wasteful number, since it uses less digits than its factorization.

156081556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13023 (or 13021 counting only the distinct ones).

The product of its (nonzero) digits is 36000, while the sum is 37.

The square root of 156081556 is about 12493.2604231241. The cubic root of 156081556 is about 538.4150553972.

The spelling of 156081556 in words is "one hundred fifty-six million, eighty-one thousand, five hundred fifty-six".