156612113 has 4 divisors (see below), whose sum is σ = 178985280. Its totient is φ = 134238948.

The previous prime is 156612103. The next prime is 156612139. The reversal of 156612113 is 311216651.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 311216651 = 617 ⋅504403.

It is a cyclic number.

It is not a de Polignac number, because 156612113 - 2¹² = 156608017 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (156612103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11186573 + ... + 11186586.

It is an arithmetic number, because the mean of its divisors is an integer number (44746320).

Almost surely, 2^156612113 is an apocalyptic number.

It is an amenable number.

156612113 is a deficient number, since it is larger than the sum of its proper divisors (22373167).

156612113 is an equidigital number, since it uses as much as digits as its factorization.

156612113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22373166.

The product of its digits is 1080, while the sum is 26.

The square root of 156612113 is about 12514.4761376575. The cubic root of 156612113 is about 539.0244308614.

Adding to 156612113 its reverse (311216651), we get a palindrome (467828764).

The spelling of 156612113 in words is "one hundred fifty-six million, six hundred twelve thousand, one hundred thirteen".