22251037 has 2 divisors, whose sum is σ = 22251038. Its totient is φ = 22251036.

The previous prime is 22251029. The next prime is 22251041. The reversal of 22251037 is 73015222.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22221796 + 29241 = 4714^2 + 171^2 .

It is a cyclic number.

It is not a de Polignac number, because 22251037 - 2³ = 22251029 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22250999 and 22251017.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22251017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11125518 + 11125519.

It is an arithmetic number, because the mean of its divisors is an integer number (11125519).

Almost surely, 2^22251037 is an apocalyptic number.

It is an amenable number.

22251037 is a deficient number, since it is larger than the sum of its proper divisors (1).

22251037 is an equidigital number, since it uses as much as digits as its factorization.

22251037 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 840, while the sum is 22.

The square root of 22251037 is about 4717.1004865277. The cubic root of 22251037 is about 281.2656859070.

Adding to 22251037 its reverse (73015222), we get a palindrome (95266259).

The spelling of 22251037 in words is "twenty-two million, two hundred fifty-one thousand, thirty-seven".