22247351 has 4 divisors (see below), whose sum is σ = 25425552. Its totient is φ = 19069152.

The previous prime is 22247341. The next prime is 22247363. The reversal of 22247351 is 15374222.

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 22247351 - 2⁶ = 22247287 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 22247351.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22247311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1589090 + ... + 1589103.

It is an arithmetic number, because the mean of its divisors is an integer number (6356388).

Almost surely, 2^22247351 is an apocalyptic number.

22247351 is a deficient number, since it is larger than the sum of its proper divisors (3178201).

22247351 is an equidigital number, since it uses as much as digits as its factorization.

22247351 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3178200.

The product of its digits is 3360, while the sum is 26.

The square root of 22247351 is about 4716.7097642318. The cubic root of 22247351 is about 281.2501540081.

The spelling of 22247351 in words is "twenty-two million, two hundred forty-seven thousand, three hundred fifty-one".