531374440 has 32 divisors (see below), whose sum is σ = 1265923080. Its totient is φ = 200046592.

The previous prime is 531374429. The next prime is 531374443. The reversal of 531374440 is 44473135.

It can be written as a sum of positive squares in 4 ways, for example, as 512660164 + 18714276 = 22642^2 + 4326^2 .

It is not an unprimeable number, because it can be changed into a prime (531374443) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 390037 + ... + 391396.

Almost surely, 2^531374440 is an apocalyptic number.

It is an amenable number.

531374440 is an abundant number, since it is smaller than the sum of its proper divisors (734548640).

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

531374440 is a wasteful number, since it uses less digits than its factorization.

531374440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 781461 (or 781457 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 31.

The square root of 531374440 is about 23051.5604677861. The cubic root of 531374440 is about 809.9661826048.

The spelling of 531374440 in words is "five hundred thirty-one million, three hundred seventy-four thousand, four hundred forty".