531618772 has 12 divisors (see below), whose sum is σ = 931664916. Its totient is φ = 265428800.

The previous prime is 531618743. The next prime is 531618797. The reversal of 531618772 is 277816135.

It can be written as a sum of positive squares in 2 ways, for example, as 192543376 + 339075396 = 13876^2 + 18414^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 91993 + ... + 97600.

It is an arithmetic number, because the mean of its divisors is an integer number (77638743).

Almost surely, 2^531618772 is an apocalyptic number.

It is an amenable number.

531618772 is a deficient number, since it is larger than the sum of its proper divisors (400046144).

531618772 is a wasteful number, since it uses less digits than its factorization.

531618772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190298 (or 190296 counting only the distinct ones).

The product of its digits is 70560, while the sum is 40.

The square root of 531618772 is about 23056.8595433116. The cubic root of 531618772 is about 810.0903074641.

The spelling of 531618772 in words is "five hundred thirty-one million, six hundred eighteen thousand, seven hundred seventy-two".