22171345 has 8 divisors (see below), whose sum is σ = 30406464. Its totient is φ = 15203184.

The previous prime is 22171339. The next prime is 22171351. The reversal of 22171345 is 54317122.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (22171339) and next prime (22171351).

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 22171345 - 2³ = 22171337 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, 316699 + ... + 316768.

It is an arithmetic number, because the mean of its divisors is an integer number (3800808).

Almost surely, 2^22171345 is an apocalyptic number.

It is an amenable number.

22171345 is a deficient number, since it is larger than the sum of its proper divisors (8235119).

22171345 is an equidigital number, since it uses as much as digits as its factorization.

22171345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 633479.

The product of its digits is 1680, while the sum is 25.

The square root of 22171345 is about 4708.6457713445. The cubic root of 22171345 is about 280.9295002616.

Adding to 22171345 its reverse (54317122), we get a palindrome (76488467).

The spelling of 22171345 in words is "twenty-two million, one hundred seventy-one thousand, three hundred forty-five".