22785137 has 2 divisors, whose sum is σ = 22785138. Its totient is φ = 22785136.

The previous prime is 22785131. The next prime is 22785143. The reversal of 22785137 is 73158722.

It is a balanced prime because it is at equal distance from previous prime (22785131) and next prime (22785143).

It can be written as a sum of positive squares in only one way, i.e., 16654561 + 6130576 = 4081^2 + 2476^2 .

It is a cyclic number.

It is not a de Polignac number, because 22785137 - 2⁴ = 22785121 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 22785097 and 22785106.

It is not a weakly prime, because it can be changed into another prime (22785131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11392568 + 11392569.

It is an arithmetic number, because the mean of its divisors is an integer number (11392569).

Almost surely, 2^22785137 is an apocalyptic number.

It is an amenable number.

22785137 is a deficient number, since it is larger than the sum of its proper divisors (1).

22785137 is an equidigital number, since it uses as much as digits as its factorization.

22785137 is an evil number, because the sum of its binary digits is even.

The product of its digits is 23520, while the sum is 35.

The square root of 22785137 is about 4773.3779443912. The cubic root of 22785137 is about 283.4983581510.

It can be divided in two parts, 22785 and 137, that added together give a palindrome (22922).

The spelling of 22785137 in words is "twenty-two million, seven hundred eighty-five thousand, one hundred thirty-seven".