156621226 has 16 divisors (see below), whose sum is σ = 237597696. Its totient is φ = 77426496.

The previous prime is 156621211. The next prime is 156621229. The reversal of 156621226 is 622126651.

It is not an unprimeable number, because it can be changed into a prime (156621229) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 87250 + ... + 89026.

It is an arithmetic number, because the mean of its divisors is an integer number (14849856).

Almost surely, 2^156621226 is an apocalyptic number.

156621226 is a deficient number, since it is larger than the sum of its proper divisors (80976470).

156621226 is a wasteful number, since it uses less digits than its factorization.

156621226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2253.

The product of its digits is 8640, while the sum is 31.

The square root of 156621226 is about 12514.8402307021. The cubic root of 156621226 is about 539.0348856389.

Adding to 156621226 its reverse (622126651), we get a palindrome (778747877).

The spelling of 156621226 in words is "one hundred fifty-six million, six hundred twenty-one thousand, two hundred twenty-six".