6531242553 has 48 divisors (see below), whose sum is σ = 10629283392. Its totient is φ = 3829680000.

The previous prime is 6531242551. The next prime is 6531242567. The reversal of 6531242553 is 3552421356.

6531242553 is a `hidden beast` number, since 6 + 53 + 12 + 42 + 553 = 666.

It is not a de Polignac number, because 6531242553 - 2¹ = 6531242551 is a prime.

It is a super-2 number, since 2×6531242553² = 85314258572235915618, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (6531242551) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 658078 + ... + 667928.

It is an arithmetic number, because the mean of its divisors is an integer number (221443404).

Almost surely, 2^6531242553 is an apocalyptic number.

It is an amenable number.

6531242553 is a deficient number, since it is larger than the sum of its proper divisors (4098040839).

6531242553 is a wasteful number, since it uses less digits than its factorization.

6531242553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10086 (or 10083 counting only the distinct ones).

The product of its digits is 108000, while the sum is 36.

The square root of 6531242553 is about 80816.1033024978. The cubic root of 6531242553 is about 1869.2408819829.

The spelling of 6531242553 in words is "six billion, five hundred thirty-one million, two hundred forty-two thousand, five hundred fifty-three".