5245500221 has 16 divisors (see below), whose sum is σ = 6204858240. Its totient is φ = 4387711680.

The previous prime is 5245500187. The next prime is 5245500233. The reversal of 5245500221 is 1220055425.

It is a cyclic number.

It is not a de Polignac number, because 5245500221 - 2²² = 5241305917 is a prime.

It is a super-2 number, since 2×5245500221² = 55030545137022097682, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5245500241) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 455990 + ... + 467351.

It is an arithmetic number, because the mean of its divisors is an integer number (387803640).

Almost surely, 2^5245500221 is an apocalyptic number.

It is an amenable number.

5245500221 is a deficient number, since it is larger than the sum of its proper divisors (959358019).

5245500221 is a wasteful number, since it uses less digits than its factorization.

5245500221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 923396.

The product of its (nonzero) digits is 4000, while the sum is 26.

The square root of 5245500221 is about 72425.8256494187. The cubic root of 5245500221 is about 1737.5166296633.

Adding to 5245500221 its reverse (1220055425), we get a palindrome (6465555646).

The spelling of 5245500221 in words is "five billion, two hundred forty-five million, five hundred thousand, two hundred twenty-one".