22537157 has 2 divisors, whose sum is σ = 22537158. Its totient is φ = 22537156.

The previous prime is 22537153. The next prime is 22537183. The reversal of 22537157 is 75173522.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16924996 + 5612161 = 4114^2 + 2369^2 .

It is a cyclic number.

It is not a de Polignac number, because 22537157 - 2² = 22537153 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 (22537153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11268578 + 11268579.

It is an arithmetic number, because the mean of its divisors is an integer number (11268579).

Almost surely, 2^22537157 is an apocalyptic number.

It is an amenable number.

22537157 is a deficient number, since it is larger than the sum of its proper divisors (1).

22537157 is an equidigital number, since it uses as much as digits as its factorization.

22537157 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 14700, while the sum is 32.

The square root of 22537157 is about 4747.3315662591. The cubic root of 22537157 is about 282.4661279774.

The spelling of 22537157 in words is "twenty-two million, five hundred thirty-seven thousand, one hundred fifty-seven".