22534157 has 2 divisors, whose sum is σ = 22534158. Its totient is φ = 22534156.

The previous prime is 22534153. The next prime is 22534217. The reversal of 22534157 is 75143522.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20376196 + 2157961 = 4514^2 + 1469^2 .

It is a cyclic number.

It is not a de Polignac number, because 22534157 - 2² = 22534153 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 (22534153) 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 as a sum of consecutive naturals, namely, 11267078 + 11267079.

It is an arithmetic number, because the mean of its divisors is an integer number (11267079).

Almost surely, 2^22534157 is an apocalyptic number.

It is an amenable number.

22534157 is a deficient number, since it is larger than the sum of its proper divisors (1).

22534157 is an equidigital number, since it uses as much as digits as its factorization.

22534157 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8400, while the sum is 29.

The square root of 22534157 is about 4747.0155887673. The cubic root of 22534157 is about 282.4535940690.

Adding to 22534157 its reverse (75143522), we get a palindrome (97677679).

The spelling of 22534157 in words is "twenty-two million, five hundred thirty-four thousand, one hundred fifty-seven".