5221991226 has 16 divisors (see below), whose sum is σ = 10726252704. Its totient is φ = 1693618704.

The previous prime is 5221991219. The next prime is 5221991233. The reversal of 5221991226 is 6221991225.

It is an interprime number because it is at equal distance from previous prime (5221991219) and next prime (5221991233).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11761020 + ... + 11761463.

It is an arithmetic number, because the mean of its divisors is an integer number (670390794).

Almost surely, 2^5221991226 is an apocalyptic number.

5221991226 is an abundant number, since it is smaller than the sum of its proper divisors (5504261478).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

5221991226 is a wasteful number, since it uses less digits than its factorization.

5221991226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23522525.

The product of its digits is 38880, while the sum is 39.

The square root of 5221991226 is about 72263.3463520753. The cubic root of 5221991226 is about 1734.9170399973.

Subtracting 5221991226 from its reverse (6221991225), we obtain a palindrome (999999999).

The spelling of 5221991226 in words is "five billion, two hundred twenty-one million, nine hundred ninety-one thousand, two hundred twenty-six".