22481523 has 16 divisors (see below), whose sum is σ = 33505440. Its totient is φ = 14897952.

The previous prime is 22481521. The next prime is 22481527. The reversal of 22481523 is 32518422.

It is not a de Polignac number, because 22481523 - 2¹ = 22481521 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (22481521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2265 + ... + 7077.

It is an arithmetic number, because the mean of its divisors is an integer number (2094090).

Almost surely, 2^22481523 is an apocalyptic number.

22481523 is a deficient number, since it is larger than the sum of its proper divisors (11023917).

22481523 is a wasteful number, since it uses less digits than its factorization.

22481523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4995 (or 4989 counting only the distinct ones).

The product of its digits is 3840, while the sum is 27.

The square root of 22481523 is about 4741.4684434255. The cubic root of 22481523 is about 282.2335096224.

Adding to 22481523 its reverse (32518422), we get a palindrome (54999945).

The spelling of 22481523 in words is "twenty-two million, four hundred eighty-one thousand, five hundred twenty-three".