22245251 has 8 divisors (see below), whose sum is σ = 26110560. Its totient is φ = 18551808.

The previous prime is 22245227. The next prime is 22245263. The reversal of 22245251 is 15254222.

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

It is a cyclic number.

It is not a de Polignac number, because 22245251 - 2⁶ = 22245187 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22245211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42686 + ... + 43203.

It is an arithmetic number, because the mean of its divisors is an integer number (3263820).

Almost surely, 2^22245251 is an apocalyptic number.

22245251 is a deficient number, since it is larger than the sum of its proper divisors (3865309).

22245251 is an equidigital number, since it uses as much as digits as its factorization.

22245251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85933.

The product of its digits is 1600, while the sum is 23.

The square root of 22245251 is about 4716.4871461714. The cubic root of 22245251 is about 281.2413043567.

Adding to 22245251 its reverse (15254222), we get a palindrome (37499473).

The spelling of 22245251 in words is "twenty-two million, two hundred forty-five thousand, two hundred fifty-one".