1563323 has 4 divisors (see below), whose sum is σ = 1589880. Its totient is φ = 1536768.

The previous prime is 1563319. The next prime is 1563329. The reversal of 1563323 is 3233651.

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

It is a cyclic number.

It is not a de Polignac number, because 1563323 - 2² = 1563319 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1563329) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13190 + ... + 13307.

It is an arithmetic number, because the mean of its divisors is an integer number (397470).

2^1563323 is an apocalyptic number.

1563323 is a deficient number, since it is larger than the sum of its proper divisors (26557).

1563323 is an equidigital number, since it uses as much as digits as its factorization.

1563323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26556.

The product of its digits is 1620, while the sum is 23.

The square root of 1563323 is about 1250.3291566624. The cubic root of 1563323 is about 116.0600907449.

Adding to 1563323 its reverse (3233651), we get a palindrome (4796974).

It can be divided in two parts, 156332 and 3, that multiplied together give a triangular number (468996 = T₉₆₈).

The spelling of 1563323 in words is "one million, five hundred sixty-three thousand, three hundred twenty-three".