522221003 has 4 divisors (see below), whose sum is σ = 544926288. Its totient is φ = 499515720.

The previous prime is 522220987. The next prime is 522221033. The reversal of 522221003 is 300122225.

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 522221003 - 2⁴ = 522220987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (522221033) 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, 11352608 + ... + 11352653.

It is an arithmetic number, because the mean of its divisors is an integer number (136231572).

Almost surely, 2^522221003 is an apocalyptic number.

522221003 is a deficient number, since it is larger than the sum of its proper divisors (22705285).

522221003 is a wasteful number, since it uses less digits than its factorization.

522221003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22705284.

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 522221003 is about 22852.1553250454. The cubic root of 522221003 is about 805.2884030221.

Adding to 522221003 its reverse (300122225), we get a palindrome (822343228).

The spelling of 522221003 in words is "five hundred twenty-two million, two hundred twenty-one thousand, three".