531400 has 24 divisors (see below), whose sum is σ = 1235970. Its totient is φ = 212480.

The previous prime is 531383. The next prime is 531457. The reversal of 531400 is 4135.

It can be written as a sum of positive squares in 3 ways, for example, as 427716 + 103684 = 654^2 + 322^2 .

It is a nialpdrome in base 3, base 9 and base 14.

It is a zygodrome in base 3 and base 9.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1129 + ... + 1528.

2⁵³¹⁴⁰⁰ is an apocalyptic number.

531400 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

531400 is an abundant number, since it is smaller than the sum of its proper divisors (704570).

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

531400 is a wasteful number, since it uses less digits than its factorization.

531400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2673 (or 2664 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 13.

The square root of 531400 is about 728.9718787443. The cubic root of 531400 is about 80.9979169306.

Adding to 531400 its reverse (4135), we get a palindrome (535535).

The spelling of 531400 in words is "five hundred thirty-one thousand, four hundred".