561223003 has 4 divisors (see below), whose sum is σ = 612243288. Its totient is φ = 510202720.

The previous prime is 561222943. The next prime is 561223027. The reversal of 561223003 is 300322165.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-561223003 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (561223073) 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, 25510126 + ... + 25510147.

It is an arithmetic number, because the mean of its divisors is an integer number (153060822).

Almost surely, 2^561223003 is an apocalyptic number.

561223003 is a deficient number, since it is larger than the sum of its proper divisors (51020285).

561223003 is a wasteful number, since it uses less digits than its factorization.

561223003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51020284.

The product of its (nonzero) digits is 1080, while the sum is 22.

The square root of 561223003 is about 23690.1456939378. The cubic root of 561223003 is about 824.8566646607.

Adding to 561223003 its reverse (300322165), we get a palindrome (861545168).

The spelling of 561223003 in words is "five hundred sixty-one million, two hundred twenty-three thousand, three".