6512252921 has 4 divisors (see below), whose sum is σ = 6512416512. Its totient is φ = 6512089332.

The previous prime is 6512252881. The next prime is 6512252927. The reversal of 6512252921 is 1292522156.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6512252921 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (6512252927) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20876 + ... + 116018.

It is an arithmetic number, because the mean of its divisors is an integer number (1628104128).

Almost surely, 2^6512252921 is an apocalyptic number.

It is an amenable number.

6512252921 is a deficient number, since it is larger than the sum of its proper divisors (163591).

6512252921 is an equidigital number, since it uses as much as digits as its factorization.

6512252921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163590.

The product of its digits is 21600, while the sum is 35.

The square root of 6512252921 is about 80698.5310956773. The cubic root of 6512252921 is about 1867.4275132062.

The spelling of 6512252921 in words is "six billion, five hundred twelve million, two hundred fifty-two thousand, nine hundred twenty-one".