22775149 has 4 divisors (see below), whose sum is σ = 22786560. Its totient is φ = 22763740.

The previous prime is 22775141. The next prime is 22775161. The reversal of 22775149 is 94157722.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 22775149 - 2³ = 22775141 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 (22775141) 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, 1837 + ... + 6994.

It is an arithmetic number, because the mean of its divisors is an integer number (5696640).

Almost surely, 2^22775149 is an apocalyptic number.

It is an amenable number.

22775149 is a deficient number, since it is larger than the sum of its proper divisors (11411).

22775149 is an equidigital number, since it uses as much as digits as its factorization.

22775149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11410.

The product of its digits is 35280, while the sum is 37.

The square root of 22775149 is about 4772.3316104395. The cubic root of 22775149 is about 283.4569277008.

The spelling of 22775149 in words is "twenty-two million, seven hundred seventy-five thousand, one hundred forty-nine".