523253240 has 32 divisors (see below), whose sum is σ = 1204703280. Its totient is φ = 204433152.

The previous prime is 523253239. The next prime is 523253267. The reversal of 523253240 is 42352325.

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, 150389 + ... + 153828.

Almost surely, 2^523253240 is an apocalyptic number.

It is an amenable number.

523253240 is an abundant number, since it is smaller than the sum of its proper divisors (681450040).

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

523253240 is a wasteful number, since it uses less digits than its factorization.

523253240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 304271 (or 304267 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 26.

The square root of 523253240 is about 22874.7292880156. The cubic root of 523253240 is about 805.8186391937.

The spelling of 523253240 in words is "five hundred twenty-three million, two hundred fifty-three thousand, two hundred forty".