22550765 has 4 divisors (see below), whose sum is σ = 27060924. Its totient is φ = 18040608.

The previous prime is 22550753. The next prime is 22550767. The reversal of 22550765 is 56705522.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 56705522 = 2 ⋅28352761.

It can be written as a sum of positive squares in 2 ways, for example, as 10426441 + 12124324 = 3229^2 + 3482^2 .

It is a cyclic number.

It is not a de Polignac number, because 22550765 - 2⁸ = 22550509 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22550767) 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, 2255072 + ... + 2255081.

It is an arithmetic number, because the mean of its divisors is an integer number (6765231).

Almost surely, 2^22550765 is an apocalyptic number.

It is an amenable number.

22550765 is a deficient number, since it is larger than the sum of its proper divisors (4510159).

22550765 is an equidigital number, since it uses as much as digits as its factorization.

22550765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4510158.

The product of its (nonzero) digits is 21000, while the sum is 32.

The square root of 22550765 is about 4748.7645761819. The cubic root of 22550765 is about 282.5229678248.

The spelling of 22550765 in words is "twenty-two million, five hundred fifty thousand, seven hundred sixty-five".