22047566 has 4 divisors (see below), whose sum is σ = 33071352. Its totient is φ = 11023782.

The previous prime is 22047563. The next prime is 22047583. The reversal of 22047566 is 66574022.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 66574022 = 2 ⋅33287011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22047563) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5511890 + ... + 5511893.

It is an arithmetic number, because the mean of its divisors is an integer number (8267838).

Almost surely, 2^22047566 is an apocalyptic number.

22047566 is a deficient number, since it is larger than the sum of its proper divisors (11023786).

22047566 is a wasteful number, since it uses less digits than its factorization.

22047566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11023785.

The product of its (nonzero) digits is 20160, while the sum is 32.

The square root of 22047566 is about 4695.4835746705. The cubic root of 22047566 is about 280.4057298265.

The spelling of 22047566 in words is "twenty-two million, forty-seven thousand, five hundred sixty-six".