523959823 has 2 divisors, whose sum is σ = 523959824. Its totient is φ = 523959822.

The previous prime is 523959781. The next prime is 523959829. The reversal of 523959823 is 328959325.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 523959823 - 2⁹ = 523959311 is a prime.

It is a super-2 number, since 2×523959823² = 549067792236382658, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (523959829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 261979911 + 261979912.

It is an arithmetic number, because the mean of its divisors is an integer number (261979912).

Almost surely, 2^523959823 is an apocalyptic number.

523959823 is a deficient number, since it is larger than the sum of its proper divisors (1).

523959823 is an equidigital number, since it uses as much as digits as its factorization.

523959823 is an evil number, because the sum of its binary digits is even.

The product of its digits is 583200, while the sum is 46.

The square root of 523959823 is about 22890.1686974998. The cubic root of 523959823 is about 806.1811925495.

The spelling of 523959823 in words is "five hundred twenty-three million, nine hundred fifty-nine thousand, eight hundred twenty-three".