423563 has 4 divisors (see below), whose sum is σ = 484080. Its totient is φ = 363048.

The previous prime is 423559. The next prime is 423581. The reversal of 423563 is 365324.

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

It is not a de Polignac number, because 423563 - 2² = 423559 is a prime.

It is a super-2 number, since 2×423563² = 358811229938, which contains 22 as substring.

It is a d-powerful number, because it can be written as 4⁸ + 2¹⁷ + 5⁵ + 3³ + 6⁶ + 3¹¹ .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (423503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30248 + ... + 30261.

It is an arithmetic number, because the mean of its divisors is an integer number (121020).

2⁴²³⁵⁶³ is an apocalyptic number.

423563 is a deficient number, since it is larger than the sum of its proper divisors (60517).

423563 is an equidigital number, since it uses as much as digits as its factorization.

423563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60516.

The product of its digits is 2160, while the sum is 23.

The square root of 423563 is about 650.8171786301. The cubic root of 423563 is about 75.0998965130.

Adding to 423563 its reverse (365324), we get a palindrome (788887).

The spelling of 423563 in words is "four hundred twenty-three thousand, five hundred sixty-three".