253502220 has 24 divisors (see below), whose sum is σ = 709806384. Its totient is φ = 67600576.

The previous prime is 253502213. The next prime is 253502299. The reversal of 253502220 is 22205352.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2112459 + ... + 2112578.

It is an arithmetic number, because the mean of its divisors is an integer number (29575266).

Almost surely, 2^253502220 is an apocalyptic number.

253502220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

253502220 is an abundant number, since it is smaller than the sum of its proper divisors (456304164).

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

253502220 is a wasteful number, since it uses less digits than its factorization.

253502220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4225049 (or 4225047 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 21.

The square root of 253502220 is about 15921.7530441846. The cubic root of 253502220 is about 632.8885747834. Note that the first 3 decimals are identical.

Adding to 253502220 its reverse (22205352), we get a palindrome (275707572).

The spelling of 253502220 in words is "two hundred fifty-three million, five hundred two thousand, two hundred twenty".