523404223 has 2 divisors, whose sum is σ = 523404224. Its totient is φ = 523404222.

The previous prime is 523404199. The next prime is 523404263. The reversal of 523404223 is 322404325.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 523404223 - 2¹⁷ = 523273151 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (523404263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 261702111 + 261702112.

It is an arithmetic number, because the mean of its divisors is an integer number (261702112).

Almost surely, 2^523404223 is an apocalyptic number.

523404223 is a deficient number, since it is larger than the sum of its proper divisors (1).

523404223 is an equidigital number, since it uses as much as digits as its factorization.

523404223 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5760, while the sum is 25.

The square root of 523404223 is about 22878.0292639030. The cubic root of 523404223 is about 805.8961371789.

Adding to 523404223 its reverse (322404325), we get a palindrome (845808548).

The spelling of 523404223 in words is "five hundred twenty-three million, four hundred four thousand, two hundred twenty-three".