2215052500 has 30 divisors (see below), whose sum is σ = 4843882274. Its totient is φ = 886020000.

The previous prime is 2215052491. The next prime is 2215052501. The reversal of 2215052500 is 52505122.

It can be written as a sum of positive squares in 5 ways, for example, as 556771216 + 1658281284 = 23596^2 + 40722^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2215052501) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 440511 + ... + 445510.

Almost surely, 2^2215052500 is an apocalyptic number.

2215052500 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2215052500 is an abundant number, since it is smaller than the sum of its proper divisors (2628829774).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2215052500 is an equidigital number, since it uses as much as digits as its factorization.

2215052500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 886045 (or 886028 counting only the distinct ones).

The product of its (nonzero) digits is 1000, while the sum is 22.

The square root of 2215052500 is about 47064.3442533730. The cubic root of 2215052500 is about 1303.5509426764.

Adding to 2215052500 its reverse (52505122), we get a palindrome (2267557622).

The spelling of 2215052500 in words is "two billion, two hundred fifteen million, fifty-two thousand, five hundred".