22361945 has 8 divisors (see below), whose sum is σ = 26974536. Its totient is φ = 17796096.

The previous prime is 22361939. The next prime is 22361951. The reversal of 22361945 is 54916322.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (22361939) and next prime (22361951).

It can be written as a sum of positive squares in 4 ways, for example, as 534361 + 21827584 = 731^2 + 4672^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 22361945 - 2²⁴ = 5584729 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10622 + ... + 12551.

It is an arithmetic number, because the mean of its divisors is an integer number (3371817).

Almost surely, 2^22361945 is an apocalyptic number.

It is an amenable number.

22361945 is a deficient number, since it is larger than the sum of its proper divisors (4612591).

22361945 is a wasteful number, since it uses less digits than its factorization.

22361945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23371.

The product of its digits is 12960, while the sum is 32.

The square root of 22361945 is about 4728.8418243794. The cubic root of 22361945 is about 281.7322248966.

The spelling of 22361945 in words is "twenty-two million, three hundred sixty-one thousand, nine hundred forty-five".