6531121252 has 12 divisors (see below), whose sum is σ = 11430687856. Its totient is φ = 3265210440.

The previous prime is 6531121243. The next prime is 6531121271. The reversal of 6531121252 is 2521211356.

It is a self number, because there is not a number n which added to its sum of digits gives 6531121252.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43074 + ... + 122137.

Almost surely, 2^6531121252 is an apocalyptic number.

It is an amenable number.

6531121252 is a deficient number, since it is larger than the sum of its proper divisors (4899566604).

6531121252 is a wasteful number, since it uses less digits than its factorization.

6531121252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 175098 (or 175096 counting only the distinct ones).

The product of its digits is 3600, while the sum is 28.

The square root of 6531121252 is about 80815.3528235817. The cubic root of 6531121252 is about 1869.2293098004.

The spelling of 6531121252 in words is "six billion, five hundred thirty-one million, one hundred twenty-one thousand, two hundred fifty-two".