22197261 has 8 divisors (see below), whose sum is σ = 29678464. Its totient is φ = 14757120.

The previous prime is 22197251. The next prime is 22197281. The reversal of 22197261 is 16279122.

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

It is not a de Polignac number, because 22197261 - 2¹⁷ = 22066189 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22197251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8980 + ... + 11181.

It is an arithmetic number, because the mean of its divisors is an integer number (3709808).

Almost surely, 2^22197261 is an apocalyptic number.

It is an amenable number.

22197261 is a deficient number, since it is larger than the sum of its proper divisors (7481203).

22197261 is a wasteful number, since it uses less digits than its factorization.

22197261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20531.

The product of its digits is 3024, while the sum is 30.

The square root of 22197261 is about 4711.3969266026. The cubic root of 22197261 is about 281.0389167783.

The spelling of 22197261 in words is "twenty-two million, one hundred ninety-seven thousand, two hundred sixty-one".