512223156 has 48 divisors (see below), whose sum is σ = 1385731200. Its totient is φ = 163316736.

The previous prime is 512223149. The next prime is 512223157. The reversal of 512223156 is 651322215.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (512223157) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 100621 + ... + 105588.

It is an arithmetic number, because the mean of its divisors is an integer number (28869400).

Almost surely, 2^512223156 is an apocalyptic number.

It is an amenable number.

512223156 is an abundant number, since it is smaller than the sum of its proper divisors (873508044).

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

512223156 is a wasteful number, since it uses less digits than its factorization.

512223156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206245 (or 206237 counting only the distinct ones).

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

The square root of 512223156 is about 22632.3475583069. The cubic root of 512223156 is about 800.1162102015.

The spelling of 512223156 in words is "five hundred twelve million, two hundred twenty-three thousand, one hundred fifty-six".