22554047 has 4 divisors (see below), whose sum is σ = 22563960. Its totient is φ = 22544136.

The previous prime is 22554043. The next prime is 22554061. The reversal of 22554047 is 74045522.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 74045522 = 2 ⋅37022761.

It is a cyclic number.

It is not a de Polignac number, because 22554047 - 2² = 22554043 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 (22554041) 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, 353 + ... + 6725.

It is an arithmetic number, because the mean of its divisors is an integer number (5640990).

Almost surely, 2^22554047 is an apocalyptic number.

22554047 is a deficient number, since it is larger than the sum of its proper divisors (9913).

22554047 is an equidigital number, since it uses as much as digits as its factorization.

22554047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9912.

The product of its (nonzero) digits is 11200, while the sum is 29.

The square root of 22554047 is about 4749.1101271712. The cubic root of 22554047 is about 282.5366731308.

Adding to 22554047 its reverse (74045522), we get a palindrome (96599569).

The spelling of 22554047 in words is "twenty-two million, five hundred fifty-four thousand, forty-seven".