531570540 has 48 divisors (see below), whose sum is σ = 1489404672. Its totient is φ = 141656256.

The previous prime is 531570509. The next prime is 531570629. The reversal of 531570540 is 45075135.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 531570498 and 531570507.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 157147 + ... + 160493.

It is an arithmetic number, because the mean of its divisors is an integer number (31029264).

Almost surely, 2^531570540 is an apocalyptic number.

It is an amenable number.

531570540 is an abundant number, since it is smaller than the sum of its proper divisors (957834132).

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

531570540 is a wasteful number, since it uses less digits than its factorization.

531570540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6006 (or 6004 counting only the distinct ones).

The product of its (nonzero) digits is 10500, while the sum is 30.

The square root of 531570540 is about 23055.8135835628. The cubic root of 531570540 is about 810.0658077916.

It can be divided in two parts, 5315 and 70540, that added together give a triangular number (75855 = T₃₈₉).

The spelling of 531570540 in words is "five hundred thirty-one million, five hundred seventy thousand, five hundred forty".