156545231 has 12 divisors (see below), whose sum is σ = 169132440. Its totient is φ = 144823680.

The previous prime is 156545201. The next prime is 156545243. The reversal of 156545231 is 132545651.

156545231 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 156545231 - 2⁶ = 156545167 is a prime.

It is a super-2 number, since 2×156545231² = 49012818697686722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (156545201) 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, 12461 + ... + 21641.

It is an arithmetic number, because the mean of its divisors is an integer number (14094370).

Almost surely, 2^156545231 is an apocalyptic number.

156545231 is a deficient number, since it is larger than the sum of its proper divisors (12587209).

156545231 is an equidigital number, since it uses as much as digits as its factorization.

156545231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9274 (or 9257 counting only the distinct ones).

The product of its digits is 18000, while the sum is 32.

The square root of 156545231 is about 12511.8036669379. The cubic root of 156545231 is about 538.9476888937.

The spelling of 156545231 in words is "one hundred fifty-six million, five hundred forty-five thousand, two hundred thirty-one".