5113220521 has 4 divisors (see below), whose sum is σ = 5289538500. Its totient is φ = 4936902544.

The previous prime is 5113220491. The next prime is 5113220617. The reversal of 5113220521 is 1250223115.

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 4131275625 + 981944896 = 64275^2 + 31336^2 .

It is a cyclic number.

It is not a de Polignac number, because 5113220521 - 2⁹ = 5113220009 is a prime.

It is a super-2 number, since 2×5113220521² = 52290048192751022882, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 5113220492 and 5113220501.

It is not an unprimeable number, because it can be changed into a prime (5113220221) 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, 88158946 + ... + 88159003.

It is an arithmetic number, because the mean of its divisors is an integer number (1322384625).

Almost surely, 2^5113220521 is an apocalyptic number.

It is an amenable number.

5113220521 is a deficient number, since it is larger than the sum of its proper divisors (176317979).

5113220521 is a wasteful number, since it uses less digits than its factorization.

5113220521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176317978.

The product of its (nonzero) digits is 600, while the sum is 22.

The square root of 5113220521 is about 71506.7865380622. The cubic root of 5113220521 is about 1722.7866897263.

Adding to 5113220521 its reverse (1250223115), we get a palindrome (6363443636).

The spelling of 5113220521 in words is "five billion, one hundred thirteen million, two hundred twenty thousand, five hundred twenty-one".