5256547217 has 4 divisors (see below), whose sum is σ = 5307581760. Its totient is φ = 5205512676.

The previous prime is 5256547189. The next prime is 5256547223. The reversal of 5256547217 is 7127456525.

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 5256547217 - 2¹⁰ = 5256546193 is a prime.

It is not an unprimeable number, because it can be changed into a prime (8256547217) 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, 25517117 + ... + 25517322.

It is an arithmetic number, because the mean of its divisors is an integer number (1326895440).

Almost surely, 2^5256547217 is an apocalyptic number.

It is an amenable number.

5256547217 is a deficient number, since it is larger than the sum of its proper divisors (51034543).

5256547217 is a wasteful number, since it uses less digits than its factorization.

5256547217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51034542.

The product of its digits is 588000, while the sum is 44.

The square root of 5256547217 is about 72502.0497434383. The cubic root of 5256547217 is about 1738.7355080543.

The spelling of 5256547217 in words is "five billion, two hundred fifty-six million, five hundred forty-seven thousand, two hundred seventeen".