22490523 has 12 divisors (see below), whose sum is σ = 35439768. Its totient is φ = 13630560.

The previous prime is 22490521. The next prime is 22490537. The reversal of 22490523 is 32509422.

It is not a de Polignac number, because 22490523 - 2¹ = 22490521 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22490521) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 113490 + ... + 113687.

It is an arithmetic number, because the mean of its divisors is an integer number (2953314).

Almost surely, 2^22490523 is an apocalyptic number.

22490523 is a deficient number, since it is larger than the sum of its proper divisors (12949245).

22490523 is a wasteful number, since it uses less digits than its factorization.

22490523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 227194 (or 227191 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 22490523 is about 4742.4174215267. The cubic root of 22490523 is about 282.2711666605.

Adding to 22490523 its reverse (32509422), we get a palindrome (54999945).

It can be divided in two parts, 22 and 490523, that added together give a triangular number (490545 = T₉₉₀).

The spelling of 22490523 in words is "twenty-two million, four hundred ninety thousand, five hundred twenty-three".