531749004 has 12 divisors (see below), whose sum is σ = 1240747704. Its totient is φ = 177249664.

The previous prime is 531749003. The next prime is 531749011. The reversal of 531749004 is 400947135.

It is a tau number, because it is divible by the number of its divisors (12).

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (531749003) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22156197 + ... + 22156220.

It is an arithmetic number, because the mean of its divisors is an integer number (103395642).

Almost surely, 2^531749004 is an apocalyptic number.

It is an amenable number.

531749004 is an abundant number, since it is smaller than the sum of its proper divisors (708998700).

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

531749004 is a wasteful number, since it uses less digits than its factorization.

531749004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44312424 (or 44312422 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 33.

The square root of 531749004 is about 23059.6835190772. The cubic root of 531749004 is about 810.1564520228.

The spelling of 531749004 in words is "five hundred thirty-one million, seven hundred forty-nine thousand, four".