22743157 has 2 divisors, whose sum is σ = 22743158. Its totient is φ = 22743156.

The previous prime is 22743139. The next prime is 22743169. The reversal of 22743157 is 75134722.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21399876 + 1343281 = 4626^2 + 1159^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22743157 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22743137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11371578 + 11371579.

It is an arithmetic number, because the mean of its divisors is an integer number (11371579).

Almost surely, 2^22743157 is an apocalyptic number.

It is an amenable number.

22743157 is a deficient number, since it is larger than the sum of its proper divisors (1).

22743157 is an equidigital number, since it uses as much as digits as its factorization.

22743157 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11760, while the sum is 31.

The square root of 22743157 is about 4768.9786118204. The cubic root of 22743157 is about 283.3241425700.

Adding to 22743157 its reverse (75134722), we get a palindrome (97877879).

The spelling of 22743157 in words is "twenty-two million, seven hundred forty-three thousand, one hundred fifty-seven".