531404400 has 60 divisors (see below), whose sum is σ = 1702269272. Its totient is φ = 141707520.

The previous prime is 531404371. The next prime is 531404417. The reversal of 531404400 is 4404135.

It is a tau number, because it is divible by the number of its divisors (60).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 220219 + ... + 222618.

Almost surely, 2^531404400 is an apocalyptic number.

531404400 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

531404400 is an abundant number, since it is smaller than the sum of its proper divisors (1170864872).

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

531404400 is a wasteful number, since it uses less digits than its factorization.

531404400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 442858 (or 442847 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 531404400 is about 23052.2103061724. The cubic root of 531404400 is about 809.9814048467.

Adding to 531404400 its reverse (4404135), we get a palindrome (535808535).

The spelling of 531404400 in words is "five hundred thirty-one million, four hundred four thousand, four hundred".