22540505 has 16 divisors (see below), whose sum is σ = 29228304. Its totient is φ = 16588800.

The previous prime is 22540501. The next prime is 22540519. The reversal of 22540505 is 50504522.

It can be written as a sum of positive squares in 8 ways, for example, as 1628176 + 20912329 = 1276^2 + 4573^2 .

It is not a de Polignac number, because 22540505 - 2² = 22540501 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22540501) 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, 37205 + ... + 37805.

It is an arithmetic number, because the mean of its divisors is an integer number (1826769).

Almost surely, 2^22540505 is an apocalyptic number.

It is an amenable number.

22540505 is a deficient number, since it is larger than the sum of its proper divisors (6687799).

22540505 is a wasteful number, since it uses less digits than its factorization.

22540505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1196.

The product of its (nonzero) digits is 2000, while the sum is 23.

The square root of 22540505 is about 4747.6841723097. The cubic root of 22540505 is about 282.4801145060.

The spelling of 22540505 in words is "twenty-two million, five hundred forty thousand, five hundred five".