22816537 has 2 divisors, whose sum is σ = 22816538. Its totient is φ = 22816536.

The previous prime is 22816513. The next prime is 22816559. The reversal of 22816537 is 73561822.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17816841 + 4999696 = 4221^2 + 2236^2 .

It is a cyclic number.

It is not a de Polignac number, because 22816537 - 2¹⁵ = 22783769 is a prime.

It is not a weakly prime, because it can be changed into another prime (22816237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11408268 + 11408269.

It is an arithmetic number, because the mean of its divisors is an integer number (11408269).

Almost surely, 2^22816537 is an apocalyptic number.

It is an amenable number.

22816537 is a deficient number, since it is larger than the sum of its proper divisors (1).

22816537 is an equidigital number, since it uses as much as digits as its factorization.

22816537 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20160, while the sum is 34.

The square root of 22816537 is about 4776.6658874156. The cubic root of 22816537 is about 283.6285272518.

The spelling of 22816537 in words is "twenty-two million, eight hundred sixteen thousand, five hundred thirty-seven".