253136220 has 48 divisors (see below), whose sum is σ = 711997440. Its totient is φ = 67196736.

The previous prime is 253136209. The next prime is 253136231. The reversal of 253136220 is 22631352.

It is an interprime number because it is at equal distance from previous prime (253136209) and next prime (253136231).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3921 + ... + 22839.

It is an arithmetic number, because the mean of its divisors is an integer number (14833280).

Almost surely, 2^253136220 is an apocalyptic number.

253136220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

253136220 is an abundant number, since it is smaller than the sum of its proper divisors (458861220).

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

253136220 is a wasteful number, since it uses less digits than its factorization.

253136220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19154 (or 19152 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 24.

The square root of 253136220 is about 15910.2551833715. The cubic root of 253136220 is about 632.5838453217.

Adding to 253136220 its reverse (22631352), we get a palindrome (275767572).

The spelling of 253136220 in words is "two hundred fifty-three million, one hundred thirty-six thousand, two hundred twenty".