531021152532 has 24 divisors (see below), whose sum is σ = 1334360845216. Its totient is φ = 163391123808.

The previous prime is 531021152491. The next prime is 531021152561. The reversal of 531021152532 is 235251120135.

It is a super-2 number, since 2×531021152532² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 531021152532.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1701990718 + ... + 1701991029.

Almost surely, 2^531021152532 is an apocalyptic number.

531021152532 is a gapful number since it is divisible by the number (52) formed by its first and last digit.

It is an amenable number.

531021152532 is an abundant number, since it is smaller than the sum of its proper divisors (803339692684).

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

531021152532 is a wasteful number, since it uses less digits than its factorization.

531021152532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3403981767 (or 3403981765 counting only the distinct ones).

The product of its (nonzero) digits is 9000, while the sum is 30.

Adding to 531021152532 its reverse (235251120135), we get a palindrome (766272272667).

The spelling of 531021152532 in words is "five hundred thirty-one billion, twenty-one million, one hundred fifty-two thousand, five hundred thirty-two".