5220420051 has 16 divisors (see below), whose sum is σ = 8678101248. Its totient is φ = 2711906400.

The previous prime is 5220420047. The next prime is 5220420059. The reversal of 5220420051 is 1500240225.

It is a happy number.

It is not a de Polignac number, because 5220420051 - 2² = 5220420047 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (5220420059) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11299380 + ... + 11299841.

It is an arithmetic number, because the mean of its divisors is an integer number (542381328).

Almost surely, 2^5220420051 is an apocalyptic number.

5220420051 is a deficient number, since it is larger than the sum of its proper divisors (3457681197).

5220420051 is a wasteful number, since it uses less digits than its factorization.

5220420051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22599242.

The product of its (nonzero) digits is 800, while the sum is 21.

The square root of 5220420051 is about 72252.4743590142. The cubic root of 5220420051 is about 1734.7430238931.

Adding to 5220420051 its reverse (1500240225), we get a palindrome (6720660276).

The spelling of 5220420051 in words is "five billion, two hundred twenty million, four hundred twenty thousand, fifty-one".