253443612 has 24 divisors (see below), whose sum is σ = 593266576. Its totient is φ = 84210048.

The previous prime is 253443607. The next prime is 253443661. The reversal of 253443612 is 216344352.

It is a self number, because there is not a number n which added to its sum of digits gives 253443612.

It is a congruent number.

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, 29983 + ... + 37494.

Almost surely, 2^253443612 is an apocalyptic number.

It is an amenable number.

253443612 is an abundant number, since it is smaller than the sum of its proper divisors (339822964).

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

253443612 is a wasteful number, since it uses less digits than its factorization.

253443612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67797 (or 67795 counting only the distinct ones).

The product of its digits is 17280, while the sum is 30.

The square root of 253443612 is about 15919.9124369451. The cubic root of 253443612 is about 632.8397978372.

Adding to 253443612 its reverse (216344352), we get a palindrome (469787964).

The spelling of 253443612 in words is "two hundred fifty-three million, four hundred forty-three thousand, six hundred twelve".