22351157 has 2 divisors, whose sum is σ = 22351158. Its totient is φ = 22351156.

The previous prime is 22351151. The next prime is 22351169. The reversal of 22351157 is 75115322.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12453841 + 9897316 = 3529^2 + 3146^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22351157 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 (22351151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11175578 + 11175579.

It is an arithmetic number, because the mean of its divisors is an integer number (11175579).

Almost surely, 2^22351157 is an apocalyptic number.

It is an amenable number.

22351157 is a deficient number, since it is larger than the sum of its proper divisors (1).

22351157 is an equidigital number, since it uses as much as digits as its factorization.

22351157 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2100, while the sum is 26.

The square root of 22351157 is about 4727.7010269263. The cubic root of 22351157 is about 281.6869125572.

Adding to 22351157 its reverse (75115322), we get a palindrome (97466479).

The spelling of 22351157 in words is "twenty-two million, three hundred fifty-one thousand, one hundred fifty-seven".