22363521 has 16 divisors (see below), whose sum is σ = 31432320. Its totient is φ = 14115200.

The previous prime is 22363519. The next prime is 22363529. The reversal of 22363521 is 12536322.

It is a cyclic number.

It is not a de Polignac number, because 22363521 - 2¹ = 22363519 is a prime.

It is a Smith number, since the sum of its digits (24) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 22363491 and 22363500.

It is not an unprimeable number, because it can be changed into a prime (22363529) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5365 + ... + 8573.

It is an arithmetic number, because the mean of its divisors is an integer number (1964520).

Almost surely, 2^22363521 is an apocalyptic number.

It is an amenable number.

22363521 is a deficient number, since it is larger than the sum of its proper divisors (9068799).

22363521 is a wasteful number, since it uses less digits than its factorization.

22363521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3336.

The product of its digits is 2160, while the sum is 24.

The square root of 22363521 is about 4729.0084584403. The cubic root of 22363521 is about 281.7388432767.

Adding to 22363521 its reverse (12536322), we get a palindrome (34899843).

The spelling of 22363521 in words is "twenty-two million, three hundred sixty-three thousand, five hundred twenty-one".