22173261 has 8 divisors (see below), whose sum is σ = 32252064. Its totient is φ = 13438320.

The previous prime is 22173259. The next prime is 22173271. The reversal of 22173261 is 16237122.

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

It is not a de Polignac number, because 22173261 - 2¹ = 22173259 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22173211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 335926 + ... + 335991.

It is an arithmetic number, because the mean of its divisors is an integer number (4031508).

Almost surely, 2^22173261 is an apocalyptic number.

It is an amenable number.

22173261 is a deficient number, since it is larger than the sum of its proper divisors (10078803).

22173261 is a wasteful number, since it uses less digits than its factorization.

22173261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 671931.

The product of its digits is 1008, while the sum is 24.

The square root of 22173261 is about 4708.8492224746. The cubic root of 22173261 is about 280.9375924697.

The spelling of 22173261 in words is "twenty-two million, one hundred seventy-three thousand, two hundred sixty-one".