22545505 has 4 divisors (see below), whose sum is σ = 27054612. Its totient is φ = 18036400.

The previous prime is 22545503. The next prime is 22545521. The reversal of 22545505 is 50554522.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 12616704 + 9928801 = 3552^2 + 3151^2 .

It is not a de Polignac number, because 22545505 - 2¹ = 22545503 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22545503) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2254546 + ... + 2254555.

It is an arithmetic number, because the mean of its divisors is an integer number (6763653).

Almost surely, 2^22545505 is an apocalyptic number.

It is an amenable number.

22545505 is a deficient number, since it is larger than the sum of its proper divisors (4509107).

22545505 is an equidigital number, since it uses as much as digits as its factorization.

22545505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4509106.

The product of its (nonzero) digits is 10000, while the sum is 28.

The square root of 22545505 is about 4748.2107156275. The cubic root of 22545505 is about 282.5009998137.

The spelling of 22545505 in words is "twenty-two million, five hundred forty-five thousand, five hundred five".