531255132 has 24 divisors (see below), whose sum is σ = 1377328400. Its totient is φ = 177085008.

The previous prime is 531255113. The next prime is 531255133. The reversal of 531255132 is 231552135.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 531255096 and 531255105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (531255133) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2459407 + ... + 2459622.

Almost surely, 2^531255132 is an apocalyptic number.

It is an amenable number.

531255132 is an abundant number, since it is smaller than the sum of its proper divisors (846073268).

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

531255132 is a wasteful number, since it uses less digits than its factorization.

531255132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4919042 (or 4919034 counting only the distinct ones).

The product of its digits is 4500, while the sum is 27.

The square root of 531255132 is about 23048.9724716743. The cubic root of 531255132 is about 809.9055582620.

The spelling of 531255132 in words is "five hundred thirty-one million, two hundred fifty-five thousand, one hundred thirty-two".