22750137 has 12 divisors (see below), whose sum is σ = 32986980. Its totient is φ = 15108768.

The previous prime is 22750129. The next prime is 22750157. The reversal of 22750137 is 73105722.

It can be written as a sum of positive squares in 2 ways, for example, as 622521 + 22127616 = 789^2 + 4704^2 .

It is not a de Polignac number, because 22750137 - 2³ = 22750129 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22750137.

It is not an unprimeable number, because it can be changed into a prime (22750127) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2278 + ... + 7119.

It is an arithmetic number, because the mean of its divisors is an integer number (2748915).

Almost surely, 2^22750137 is an apocalyptic number.

It is an amenable number.

22750137 is a deficient number, since it is larger than the sum of its proper divisors (10236843).

22750137 is a wasteful number, since it uses less digits than its factorization.

22750137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9672 (or 9669 counting only the distinct ones).

The product of its (nonzero) digits is 2940, while the sum is 27.

The square root of 22750137 is about 4769.7103685654. The cubic root of 22750137 is about 283.3531241847.

Adding to 22750137 its reverse (73105722), we get a palindrome (95855859).

The spelling of 22750137 in words is "twenty-two million, seven hundred fifty thousand, one hundred thirty-seven".