5220219991 has 4 divisors (see below), whose sum is σ = 5965965712. Its totient is φ = 4474474272.

The previous prime is 5220219967. The next prime is 5220220009. The reversal of 5220219991 is 1999120225.

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

It is a cyclic number.

It is not a de Polignac number, because 5220219991 - 2⁵ = 5220219959 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5220219931) 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, 372872850 + ... + 372872863.

It is an arithmetic number, because the mean of its divisors is an integer number (1491491428).

Almost surely, 2^5220219991 is an apocalyptic number.

5220219991 is a deficient number, since it is larger than the sum of its proper divisors (745745721).

5220219991 is an equidigital number, since it uses as much as digits as its factorization.

5220219991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 745745720.

The product of its (nonzero) digits is 29160, while the sum is 40.

The square root of 5220219991 is about 72251.0898948936. The cubic root of 5220219991 is about 1734.7208636634.

The spelling of 5220219991 in words is "five billion, two hundred twenty million, two hundred nineteen thousand, nine hundred ninety-one".