156113217 has 16 divisors (see below), whose sum is σ = 249070080. Its totient is φ = 96069456.

The previous prime is 156113189. The next prime is 156113231. The reversal of 156113217 is 712311651.

156113217 is a `hidden beast` number, since 1 + 5 + 611 + 32 + 17 = 666.

It is not a de Polignac number, because 156113217 - 2²⁰ = 155064641 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (156113257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 222033 + ... + 222734.

It is an arithmetic number, because the mean of its divisors is an integer number (15566880).

Almost surely, 2^156113217 is an apocalyptic number.

It is an amenable number.

156113217 is a deficient number, since it is larger than the sum of its proper divisors (92956863).

156113217 is a wasteful number, since it uses less digits than its factorization.

156113217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 444789 (or 444783 counting only the distinct ones).

The product of its digits is 1260, while the sum is 27.

The square root of 156113217 is about 12494.5274820619. The cubic root of 156113217 is about 538.4514586020.

Adding to 156113217 its reverse (712311651), we get a palindrome (868424868).

The spelling of 156113217 in words is "one hundred fifty-six million, one hundred thirteen thousand, two hundred seventeen".