22775047 has 4 divisors (see below), whose sum is σ = 22810896. Its totient is φ = 22739200.

The previous prime is 22775041. The next prime is 22775059. The reversal of 22775047 is 74057722.

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

It is a cyclic number.

It is not a de Polignac number, because 22775047 - 2¹⁹ = 22250759 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 (22775041) 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, 16954 + ... + 18247.

It is an arithmetic number, because the mean of its divisors is an integer number (5702724).

Almost surely, 2^22775047 is an apocalyptic number.

22775047 is a deficient number, since it is larger than the sum of its proper divisors (35849).

22775047 is an equidigital number, since it uses as much as digits as its factorization.

22775047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35848.

The product of its (nonzero) digits is 27440, while the sum is 34.

The square root of 22775047 is about 4772.3209238273. The cubic root of 22775047 is about 283.4565045401.

The spelling of 22775047 in words is "twenty-two million, seven hundred seventy-five thousand, forty-seven".