156133281 has 8 divisors (see below), whose sum is σ = 208309120. Its totient is φ = 104023152.

The previous prime is 156133273. The next prime is 156133297. The reversal of 156133281 is 182331651.

156133281 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 156133281 - 2³ = 156133273 is a prime.

It is a super-2 number, since 2×156133281² = 48755202871649922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (156133231) 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, 10585 + ... + 20598.

It is an arithmetic number, because the mean of its divisors is an integer number (26038640).

Almost surely, 2^156133281 is an apocalyptic number.

It is an amenable number.

156133281 is a deficient number, since it is larger than the sum of its proper divisors (52175839).

156133281 is a wasteful number, since it uses less digits than its factorization.

156133281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32855.

The product of its digits is 4320, while the sum is 30.

The square root of 156133281 is about 12495.3303677814. The cubic root of 156133281 is about 538.4745252530.

The spelling of 156133281 in words is "one hundred fifty-six million, one hundred thirty-three thousand, two hundred eighty-one".