531789955172 has 36 divisors (see below), whose sum is σ = 1084983662700. Its totient is φ = 227402348544.

The previous prime is 531789955157. The next prime is 531789955183. The reversal of 531789955172 is 271559987135.

It can be written as a sum of positive squares in 2 ways, for example, as 241253862976 + 290536092196 = 491176^2 + 539014^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2933393 + ... + 3109400.

It is an arithmetic number, because the mean of its divisors is an integer number (30138435075).

Almost surely, 2^531789955172 is an apocalyptic number.

It is an amenable number.

531789955172 is an abundant number, since it is smaller than the sum of its proper divisors (553193707528).

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

531789955172 is a wasteful number, since it uses less digits than its factorization.

531789955172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6043260 (or 6043251 counting only the distinct ones).

The product of its digits is 23814000, while the sum is 62.

The spelling of 531789955172 in words is "five hundred thirty-one billion, seven hundred eighty-nine million, nine hundred fifty-five thousand, one hundred seventy-two".