22481507 has 2 divisors, whose sum is σ = 22481508. Its totient is φ = 22481506.

The previous prime is 22481453. The next prime is 22481521. The reversal of 22481507 is 70518422.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22481507 - 2¹⁰ = 22480483 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22481507.

It is not a weakly prime, because it can be changed into another prime (22481527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11240753 + 11240754.

It is an arithmetic number, because the mean of its divisors is an integer number (11240754).

Almost surely, 2^22481507 is an apocalyptic number.

22481507 is a deficient number, since it is larger than the sum of its proper divisors (1).

22481507 is an equidigital number, since it uses as much as digits as its factorization.

22481507 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4480, while the sum is 29.

The square root of 22481507 is about 4741.4667561842. The cubic root of 22481507 is about 282.2334426676.

Adding to 22481507 its reverse (70518422), we get a palindrome (92999929).

The spelling of 22481507 in words is "twenty-two million, four hundred eighty-one thousand, five hundred seven".