531400251252 has 24 divisors (see below), whose sum is σ = 1335313452256. Its totient is φ = 163507769568.

The previous prime is 531400251223. The next prime is 531400251271. The reversal of 531400251252 is 252152004135.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1703205778 + ... + 1703206089.

Almost surely, 2^531400251252 is an apocalyptic number.

531400251252 is a gapful number since it is divisible by the number (52) formed by its first and last digit.

It is an amenable number.

531400251252 is an abundant number, since it is smaller than the sum of its proper divisors (803913201004).

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

531400251252 is a wasteful number, since it uses less digits than its factorization.

531400251252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3406411887 (or 3406411885 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 30.

Adding to 531400251252 its reverse (252152004135), we get a palindrome (783552255387).

The spelling of 531400251252 in words is "five hundred thirty-one billion, four hundred million, two hundred fifty-one thousand, two hundred fifty-two".