531425100 has 144 divisors (see below), whose sum is σ = 1649894400. Its totient is φ = 131589120.

The previous prime is 531425077. The next prime is 531425129. The reversal of 531425100 is 1524135.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 402241 + ... + 403559.

It is an arithmetic number, because the mean of its divisors is an integer number (11457600).

Almost surely, 2^531425100 is an apocalyptic number.

531425100 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 531425100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (824947200).

531425100 is an abundant number, since it is smaller than the sum of its proper divisors (1118469300).

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

531425100 is a wasteful number, since it uses less digits than its factorization.

531425100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1432 (or 1425 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 531425100 is about 23052.6592826077. The cubic root of 531425100 is about 809.9919218826.

Adding to 531425100 its reverse (1524135), we get a palindrome (532949235).

The spelling of 531425100 in words is "five hundred thirty-one million, four hundred twenty-five thousand, one hundred".