5221720051 has 8 divisors (see below), whose sum is σ = 5546327040. Its totient is φ = 4899051648.

The previous prime is 5221720037. The next prime is 5221720057. The reversal of 5221720051 is 1500271225.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 5221720051 - 2¹⁵ = 5221687283 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 5221719998 and 5221720025.

It is not an unprimeable number, because it can be changed into a prime (5221720057) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 479091 + ... + 489868.

It is an arithmetic number, because the mean of its divisors is an integer number (693290880).

Almost surely, 2^5221720051 is an apocalyptic number.

5221720051 is a deficient number, since it is larger than the sum of its proper divisors (324606989).

5221720051 is a wasteful number, since it uses less digits than its factorization.

5221720051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 969293.

The product of its (nonzero) digits is 1400, while the sum is 25.

The square root of 5221720051 is about 72261.4700307155. The cubic root of 5221720051 is about 1734.8870083962.

Adding to 5221720051 its reverse (1500271225), we get a palindrome (6721991276).

The spelling of 5221720051 in words is "five billion, two hundred twenty-one million, seven hundred twenty thousand, fifty-one".