531650440 has 16 divisors (see below), whose sum is σ = 1196213580. Its totient is φ = 212660160.

The previous prime is 531650437. The next prime is 531650453. The reversal of 531650440 is 44056135.

It can be written as a sum of positive squares in 2 ways, for example, as 519019524 + 12630916 = 22782^2 + 3554^2 .

It is a junction number, because it is equal to n+sod(n) for n = 531650399 and 531650408.

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, 6645591 + ... + 6645670.

Almost surely, 2^531650440 is an apocalyptic number.

It is an amenable number.

531650440 is an abundant number, since it is smaller than the sum of its proper divisors (664563140).

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

531650440 is a wasteful number, since it uses less digits than its factorization.

531650440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13291272 (or 13291268 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 28.

The square root of 531650440 is about 23057.5462701477. The cubic root of 531650440 is about 810.1063925686.

The spelling of 531650440 in words is "five hundred thirty-one million, six hundred fifty thousand, four hundred forty".