22413251 has 4 divisors (see below), whose sum is σ = 25615152. Its totient is φ = 19211352.

The previous prime is 22413239. The next prime is 22413253. The reversal of 22413251 is 15231422.

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 22413251 - 2⁶ = 22413187 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22413253) 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, 1600940 + ... + 1600953.

It is an arithmetic number, because the mean of its divisors is an integer number (6403788).

Almost surely, 2^22413251 is an apocalyptic number.

22413251 is a deficient number, since it is larger than the sum of its proper divisors (3201901).

22413251 is an equidigital number, since it uses as much as digits as its factorization.

22413251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3201900.

The product of its digits is 480, while the sum is 20.

The square root of 22413251 is about 4734.2635118886. The cubic root of 22413251 is about 281.9475238942.

Adding to 22413251 its reverse (15231422), we get a palindrome (37644673).

The spelling of 22413251 in words is "twenty-two million, four hundred thirteen thousand, two hundred fifty-one".