531921372 has 48 divisors (see below), whose sum is σ = 1298529792. Its totient is φ = 169294720.

The previous prime is 531921337. The next prime is 531921373. The reversal of 531921372 is 273129135.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (531921373) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11623 + ... + 34625.

It is an arithmetic number, because the mean of its divisors is an integer number (27052704).

Almost surely, 2^531921372 is an apocalyptic number.

It is an amenable number.

531921372 is an abundant number, since it is smaller than the sum of its proper divisors (766608420).

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

531921372 is a wasteful number, since it uses less digits than its factorization.

531921372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23098 (or 23096 counting only the distinct ones).

The product of its digits is 11340, while the sum is 33.

The square root of 531921372 is about 23063.4206482907. The cubic root of 531921372 is about 810.2439807630.

The spelling of 531921372 in words is "five hundred thirty-one million, nine hundred twenty-one thousand, three hundred seventy-two".