5220450251 has 16 divisors (see below), whose sum is σ = 5447270400. Its totient is φ = 4997440800.

The previous prime is 5220450247. The next prime is 5220450269. The reversal of 5220450251 is 1520540225.

It is a cyclic number.

It is not a de Polignac number, because 5220450251 - 2² = 5220450247 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 5220450251.

It is not an unprimeable number, because it can be changed into a prime (5220456251) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3347810 + ... + 3349368.

It is an arithmetic number, because the mean of its divisors is an integer number (340454400).

Almost surely, 2^5220450251 is an apocalyptic number.

5220450251 is a deficient number, since it is larger than the sum of its proper divisors (226820149).

5220450251 is a wasteful number, since it uses less digits than its factorization.

5220450251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2690.

The product of its (nonzero) digits is 4000, while the sum is 26.

The square root of 5220450251 is about 72252.6833480944. The cubic root of 5220450251 is about 1734.7463690351.

Adding to 5220450251 its reverse (1520540225), we get a palindrome (6740990476).

The spelling of 5220450251 in words is "five billion, two hundred twenty million, four hundred fifty thousand, two hundred fifty-one".