22894561 has 4 divisors (see below), whose sum is σ = 22957312. Its totient is φ = 22831812.

The previous prime is 22894559. The next prime is 22894567. The reversal of 22894561 is 16549822.

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 an emirpimes, since its reverse is a distinct semiprime: 16549822 = 2 ⋅8274911.

It is a cyclic number.

It is not a de Polignac number, because 22894561 - 2¹ = 22894559 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 22894561.

It is not an unprimeable number, because it can be changed into a prime (22894567) 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, 30825 + ... + 31558.

It is an arithmetic number, because the mean of its divisors is an integer number (5739328).

Almost surely, 2^22894561 is an apocalyptic number.

It is an amenable number.

22894561 is a deficient number, since it is larger than the sum of its proper divisors (62751).

22894561 is an equidigital number, since it uses as much as digits as its factorization.

22894561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62750.

The product of its digits is 34560, while the sum is 37.

The square root of 22894561 is about 4784.8261201427. The cubic root of 22894561 is about 283.9514604937.

The spelling of 22894561 in words is "twenty-two million, eight hundred ninety-four thousand, five hundred sixty-one".