2500053221 has 4 divisors (see below), whose sum is σ = 2501481132. Its totient is φ = 2498625312.

The previous prime is 2500053203. The next prime is 2500053247. The reversal of 2500053221 is 1223500052.

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 156525121 + 2343528100 = 12511^2 + 48410^2 .

It is a cyclic number.

It is not a de Polignac number, because 2500053221 - 2¹⁰ = 2500052197 is a prime.

It is a super-2 number, since 2×2500053221² = 12500532215664949682, 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 = 2500053193 and 2500053202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2500052221) 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, 711326 + ... + 714831.

It is an arithmetic number, because the mean of its divisors is an integer number (625370283).

Almost surely, 2^2500053221 is an apocalyptic number.

It is an amenable number.

2500053221 is a deficient number, since it is larger than the sum of its proper divisors (1427911).

2500053221 is a wasteful number, since it uses less digits than its factorization.

2500053221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1427910.

The product of its (nonzero) digits is 600, while the sum is 20.

The square root of 2500053221 is about 50000.5322071676. The cubic root of 2500053221 is about 1357.2184391638.

Adding to 2500053221 its reverse (1223500052), we get a palindrome (3723553273).

The spelling of 2500053221 in words is "two billion, five hundred million, fifty-three thousand, two hundred twenty-one".