253253030520 has 128 divisors (see below), whose sum is σ = 871524748800. Its totient is φ = 57671164416.

The previous prime is 253253030519. The next prime is 253253030533. The reversal of 253253030520 is 25030352352.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 334434 + ... + 786353.

It is an arithmetic number, because the mean of its divisors is an integer number (6808787100).

Almost surely, 2^253253030520 is an apocalyptic number.

253253030520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

253253030520 is an abundant number, since it is smaller than the sum of its proper divisors (618271718280).

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

253253030520 is a wasteful number, since it uses less digits than its factorization.

253253030520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1121077 (or 1121073 counting only the distinct ones).

The product of its (nonzero) digits is 27000, while the sum is 30.

Adding to 253253030520 its reverse (25030352352), we get a palindrome (278283382872).

The spelling of 253253030520 in words is "two hundred fifty-three billion, two hundred fifty-three million, thirty thousand, five hundred twenty".