156542226 has 16 divisors (see below), whose sum is σ = 318217728. Its totient is φ = 51325200.

The previous prime is 156542207. The next prime is 156542257. The reversal of 156542226 is 622245651.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 213490 + ... + 214221.

It is an arithmetic number, because the mean of its divisors is an integer number (19888608).

Almost surely, 2^156542226 is an apocalyptic number.

156542226 is an abundant number, since it is smaller than the sum of its proper divisors (161675502).

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

156542226 is a wasteful number, since it uses less digits than its factorization.

156542226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 427777.

The product of its digits is 28800, while the sum is 33.

The square root of 156542226 is about 12511.6835797586. The cubic root of 156542226 is about 538.9442403736.

Adding to 156542226 its reverse (622245651), we get a palindrome (778787877).

The spelling of 156542226 in words is "one hundred fifty-six million, five hundred forty-two thousand, two hundred twenty-six".