6654512531 has 4 divisors (see below), whose sum is σ = 6796097952. Its totient is φ = 6512927112.

The previous prime is 6654512489. The next prime is 6654512533. The reversal of 6654512531 is 1352154566.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6654512531 is a prime.

It is a super-2 number, since 2×6654512531² = 88565074050472051922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6654512533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70792640 + ... + 70792733.

It is an arithmetic number, because the mean of its divisors is an integer number (1699024488).

Almost surely, 2^6654512531 is an apocalyptic number.

6654512531 is a deficient number, since it is larger than the sum of its proper divisors (141585421).

6654512531 is a wasteful number, since it uses less digits than its factorization.

6654512531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141585420.

The product of its digits is 108000, while the sum is 38.

The square root of 6654512531 is about 81575.1955621315. The cubic root of 6654512531 is about 1880.9276140376.

The spelling of 6654512531 in words is "six billion, six hundred fifty-four million, five hundred twelve thousand, five hundred thirty-one".