22446157 has 2 divisors, whose sum is σ = 22446158. Its totient is φ = 22446156.

The previous prime is 22446143. The next prime is 22446173. The reversal of 22446157 is 75164422.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18369796 + 4076361 = 4286^2 + 2019^2 .

It is a cyclic number.

It is not a de Polignac number, because 22446157 - 2¹⁵ = 22413389 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22446197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11223078 + 11223079.

It is an arithmetic number, because the mean of its divisors is an integer number (11223079).

Almost surely, 2^22446157 is an apocalyptic number.

It is an amenable number.

22446157 is a deficient number, since it is larger than the sum of its proper divisors (1).

22446157 is an equidigital number, since it uses as much as digits as its factorization.

22446157 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13440, while the sum is 31.

The square root of 22446157 is about 4737.7375402190. The cubic root of 22446157 is about 282.0854367824.

The spelling of 22446157 in words is "twenty-two million, four hundred forty-six thousand, one hundred fifty-seven".