22382251 has 4 divisors (see below), whose sum is σ = 23698872. Its totient is φ = 21065632.

The previous prime is 22382237. The next prime is 22382273. The reversal of 22382251 is 15228322.

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 22382251 - 2⁹ = 22381739 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22382281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 658285 + ... + 658318.

It is an arithmetic number, because the mean of its divisors is an integer number (5924718).

Almost surely, 2^22382251 is an apocalyptic number.

22382251 is a deficient number, since it is larger than the sum of its proper divisors (1316621).

22382251 is a wasteful number, since it uses less digits than its factorization.

22382251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1316620.

The product of its digits is 1920, while the sum is 25.

The square root of 22382251 is about 4730.9883745366. The cubic root of 22382251 is about 281.8174757369.

It can be divided in two parts, 2238 and 2251, that added together give a square (4489 = 67²).

The spelling of 22382251 in words is "twenty-two million, three hundred eighty-two thousand, two hundred fifty-one".