253534520 has 32 divisors (see below), whose sum is σ = 595257120. Its totient is φ = 97004160.

The previous prime is 253534517. The next prime is 253534531. The reversal of 253534520 is 25435352.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 136871 + ... + 138710.

It is an arithmetic number, because the mean of its divisors is an integer number (18601785).

Almost surely, 2^253534520 is an apocalyptic number.

253534520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

253534520 is an abundant number, since it is smaller than the sum of its proper divisors (341722600).

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

253534520 is a wasteful number, since it uses less digits than its factorization.

253534520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 275615 (or 275611 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 29.

The square root of 253534520 is about 15922.7673474180. The cubic root of 253534520 is about 632.9154534867.

Adding to 253534520 its reverse (25435352), we get a palindrome (278969872).

The spelling of 253534520 in words is "two hundred fifty-three million, five hundred thirty-four thousand, five hundred twenty".