5220722261 has 4 divisors (see below), whose sum is σ = 5223223500. Its totient is φ = 5218221024.

The previous prime is 5220722257. The next prime is 5220722291. The reversal of 5220722261 is 1622270225.

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

It can be written as a sum of positive squares in 2 ways, for example, as 2529084100 + 2691638161 = 50290^2 + 51881^2 .

It is a cyclic number.

It is not a de Polignac number, because 5220722261 - 2² = 5220722257 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5220722231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1247486 + ... + 1251663.

It is an arithmetic number, because the mean of its divisors is an integer number (1305805875).

Almost surely, 2^5220722261 is an apocalyptic number.

It is an amenable number.

5220722261 is a deficient number, since it is larger than the sum of its proper divisors (2501239).

5220722261 is a wasteful number, since it uses less digits than its factorization.

5220722261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2501238.

The product of its (nonzero) digits is 6720, while the sum is 29.

The square root of 5220722261 is about 72254.5656758104. The cubic root of 5220722261 is about 1734.7764979921.

Adding to 5220722261 its reverse (1622270225), we get a palindrome (6842992486).

The spelling of 5220722261 in words is "five billion, two hundred twenty million, seven hundred twenty-two thousand, two hundred sixty-one".