523253321 has 4 divisors (see below), whose sum is σ = 525538500. Its totient is φ = 520968144.

The previous prime is 523253281. The next prime is 523253323. The reversal of 523253321 is 123352325.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 265201225 + 258052096 = 16285^2 + 16064^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-523253321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (523253323) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1142246 + ... + 1142703.

It is an arithmetic number, because the mean of its divisors is an integer number (131384625).

Almost surely, 2^523253321 is an apocalyptic number.

It is an amenable number.

523253321 is a deficient number, since it is larger than the sum of its proper divisors (2285179).

523253321 is a wasteful number, since it uses less digits than its factorization.

523253321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2285178.

The product of its digits is 5400, while the sum is 26.

The square root of 523253321 is about 22874.7310585283. The cubic root of 523253321 is about 805.8186807742.

The spelling of 523253321 in words is "five hundred twenty-three million, two hundred fifty-three thousand, three hundred twenty-one".