523505326 has 4 divisors (see below), whose sum is σ = 785257992. Its totient is φ = 261752662.

The previous prime is 523505291. The next prime is 523505351. The reversal of 523505326 is 623505325.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 130876330 + ... + 130876333.

It is an arithmetic number, because the mean of its divisors is an integer number (196314498).

Almost surely, 2^523505326 is an apocalyptic number.

523505326 is a deficient number, since it is larger than the sum of its proper divisors (261752666).

523505326 is a wasteful number, since it uses less digits than its factorization.

523505326 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 261752665.

The product of its (nonzero) digits is 27000, while the sum is 31.

The square root of 523505326 is about 22880.2387662367. The cubic root of 523505326 is about 805.9480239539.

Subtracting 523505326 from its reverse (623505325), we obtain a palindrome (99999999).

The spelling of 523505326 in words is "five hundred twenty-three million, five hundred five thousand, three hundred twenty-six".