156315222 has 48 divisors (see below), whose sum is σ = 403902720. Its totient is φ = 42718896.

The previous prime is 156315217. The next prime is 156315227. The reversal of 156315222 is 222513651.

It is a happy number.

156315222 is a `hidden beast` number, since 1 + 5 + 631 + 5 + 2 + 22 = 666.

It is an interprime number because it is at equal distance from previous prime (156315217) and next prime (156315227).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (156315227) 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 23 ways as a sum of consecutive naturals, for example, 24072 + ... + 29867.

It is an arithmetic number, because the mean of its divisors is an integer number (8414640).

Almost surely, 2^156315222 is an apocalyptic number.

156315222 is an abundant number, since it is smaller than the sum of its proper divisors (247587498).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

156315222 is a wasteful number, since it uses less digits than its factorization.

156315222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53977 (or 53974 counting only the distinct ones).

The product of its digits is 3600, while the sum is 27.

The square root of 156315222 is about 12502.6086078066. The cubic root of 156315222 is about 538.6836042372.

Adding to 156315222 its reverse (222513651), we get a palindrome (378828873).

The spelling of 156315222 in words is "one hundred fifty-six million, three hundred fifteen thousand, two hundred twenty-two".