5256046721 has 4 divisors (see below), whose sum is σ = 5265001392. Its totient is φ = 5247092052.

The previous prime is 5256046711. The next prime is 5256046759. The reversal of 5256046721 is 1276406525.

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.

It is a cyclic number.

It is not a de Polignac number, because 5256046721 - 2³⁰ = 4182304897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5256046711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4476455 + ... + 4477628.

It is an arithmetic number, because the mean of its divisors is an integer number (1316250348).

Almost surely, 2^5256046721 is an apocalyptic number.

It is an amenable number.

5256046721 is a deficient number, since it is larger than the sum of its proper divisors (8954671).

5256046721 is an equidigital number, since it uses as much as digits as its factorization.

5256046721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8954670.

The product of its (nonzero) digits is 100800, while the sum is 38.

The square root of 5256046721 is about 72498.5980623074. The cubic root of 5256046721 is about 1738.6803224130.

The spelling of 5256046721 in words is "five billion, two hundred fifty-six million, forty-six thousand, seven hundred twenty-one".