22287151 has 4 divisors (see below), whose sum is σ = 22299304. Its totient is φ = 22275000.

The previous prime is 22287107. The next prime is 22287163. The reversal of 22287151 is 15178222.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 22287151 - 2¹¹ = 22285103 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 (22287101) 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, 2700 + ... + 7201.

It is an arithmetic number, because the mean of its divisors is an integer number (5574826).

Almost surely, 2^22287151 is an apocalyptic number.

22287151 is a deficient number, since it is larger than the sum of its proper divisors (12153).

22287151 is an equidigital number, since it uses as much as digits as its factorization.

22287151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12152.

The product of its digits is 2240, while the sum is 28.

The square root of 22287151 is about 4720.9269216966. The cubic root of 22287151 is about 281.4177707824.

The spelling of 22287151 in words is "twenty-two million, two hundred eighty-seven thousand, one hundred fifty-one".