22554613 has 4 divisors (see below), whose sum is σ = 22778028. Its totient is φ = 22331200.

The previous prime is 22554599. The next prime is 22554619. The reversal of 22554613 is 31645522.

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

It can be written as a sum of positive squares in 2 ways, for example, as 22061809 + 492804 = 4697^2 + 702^2 .

It is a cyclic number.

It is not a de Polignac number, because 22554613 - 2⁹ = 22554101 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 (22554619) 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, 111556 + ... + 111757.

It is an arithmetic number, because the mean of its divisors is an integer number (5694507).

Almost surely, 2^22554613 is an apocalyptic number.

It is an amenable number.

22554613 is a deficient number, since it is larger than the sum of its proper divisors (223415).

22554613 is a wasteful number, since it uses less digits than its factorization.

22554613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 223414.

The product of its digits is 7200, while the sum is 28.

The square root of 22554613 is about 4749.1697169084. The cubic root of 22554613 is about 282.5390365561.

Subtracting 22554613 from its reverse (31645522), we obtain a palindrome (9090909).

The spelling of 22554613 in words is "twenty-two million, five hundred fifty-four thousand, six hundred thirteen".