223523563 has 2 divisors, whose sum is σ = 223523564. Its totient is φ = 223523562.

The previous prime is 223523539. The next prime is 223523567. The reversal of 223523563 is 365325322.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-223523563 is a prime.

It is not a weakly prime, because it can be changed into another prime (223523567) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111761781 + 111761782.

It is an arithmetic number, because the mean of its divisors is an integer number (111761782).

Almost surely, 2^223523563 is an apocalyptic number.

223523563 is a deficient number, since it is larger than the sum of its proper divisors (1).

223523563 is an equidigital number, since it uses as much as digits as its factorization.

223523563 is an evil number, because the sum of its binary digits is even.

The product of its digits is 32400, while the sum is 31.

The square root of 223523563 is about 14950.7044315644. The cubic root of 223523563 is about 606.8869103659.

Adding to 223523563 its reverse (365325322), we get a palindrome (588848885).

The spelling of 223523563 in words is "two hundred twenty-three million, five hundred twenty-three thousand, five hundred sixty-three".