523521252 has 48 divisors (see below), whose sum is σ = 1375890880. Its totient is φ = 172113984.

The previous prime is 523521217. The next prime is 523521287. The reversal of 523521252 is 252125325.

It is an interprime number because it is at equal distance from previous prime (523521217) and next prime (523521287).

It is a Harshad number since it is a multiple of its sum of digits (27).

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, 25318 + ... + 41085.

Almost surely, 2^523521252 is an apocalyptic number.

It is an amenable number.

523521252 is an abundant number, since it is smaller than the sum of its proper divisors (852369628).

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

523521252 is a wasteful number, since it uses less digits than its factorization.

523521252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66489 (or 66481 counting only the distinct ones).

The product of its digits is 6000, while the sum is 27.

The square root of 523521252 is about 22880.5867931747. The cubic root of 523521252 is about 805.9561966807.

Adding to 523521252 its reverse (252125325), we get a palindrome (775646577).

The spelling of 523521252 in words is "five hundred twenty-three million, five hundred twenty-one thousand, two hundred fifty-two".