531042172 has 12 divisors (see below), whose sum is σ = 978235720. Its totient is φ = 251546256.

The previous prime is 531042119. The next prime is 531042173. The reversal of 531042172 is 271240135.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (531042173) 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 3 ways as a sum of consecutive naturals, for example, 3493623 + ... + 3493774.

Almost surely, 2^531042172 is an apocalyptic number.

It is an amenable number.

531042172 is a deficient number, since it is larger than the sum of its proper divisors (447193548).

531042172 is a wasteful number, since it uses less digits than its factorization.

531042172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6987420 (or 6987418 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 25.

The square root of 531042172 is about 23044.3522798971. The cubic root of 531042172 is about 809.7973236750.

The spelling of 531042172 in words is "five hundred thirty-one million, forty-two thousand, one hundred seventy-two".