22540049 has 12 divisors (see below), whose sum is σ = 26653428. Its totient is φ = 19000800.

The previous prime is 22540031. The next prime is 22540081. The reversal of 22540049 is 94004522.

It can be written as a sum of positive squares in 2 ways, for example, as 1517824 + 21022225 = 1232^2 + 4585^2 .

It is not a de Polignac number, because 22540049 - 2²⁰ = 21491473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22540009) 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, 782 + ... + 6759.

It is an arithmetic number, because the mean of its divisors is an integer number (2221119).

Almost surely, 2^22540049 is an apocalyptic number.

It is an amenable number.

22540049 is a deficient number, since it is larger than the sum of its proper divisors (4113379).

22540049 is an equidigital number, since it uses as much as digits as its factorization.

22540049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7616 (or 7609 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 22540049 is about 4747.6361486533. The cubic root of 22540049 is about 282.4782096122.

The spelling of 22540049 in words is "twenty-two million, five hundred forty thousand, forty-nine".