22195087 has 4 divisors (see below), whose sum is σ = 22444560. Its totient is φ = 21945616.

The previous prime is 22195073. The next prime is 22195091. The reversal of 22195087 is 78059122.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 22195087 - 2¹⁵ = 22162319 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22195027) 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, 124603 + ... + 124780.

It is an arithmetic number, because the mean of its divisors is an integer number (5611140).

Almost surely, 2^22195087 is an apocalyptic number.

22195087 is a deficient number, since it is larger than the sum of its proper divisors (249473).

22195087 is an equidigital number, since it uses as much as digits as its factorization.

22195087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 249472.

The product of its (nonzero) digits is 10080, while the sum is 34.

The square root of 22195087 is about 4711.1662038183. The cubic root of 22195087 is about 281.0297414939.

The spelling of 22195087 in words is "twenty-two million, one hundred ninety-five thousand, eighty-seven".