22490077 has 2 divisors, whose sum is σ = 22490078. Its totient is φ = 22490076.

The previous prime is 22490071. The next prime is 22490081. The reversal of 22490077 is 77009422.

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., 22477081 + 12996 = 4741^2 + 114^2 .

It is a cyclic number.

It is not a de Polignac number, because 22490077 - 2²³ = 14101469 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22490071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11245038 + 11245039.

It is an arithmetic number, because the mean of its divisors is an integer number (11245039).

Almost surely, 2^22490077 is an apocalyptic number.

It is an amenable number.

22490077 is a deficient number, since it is larger than the sum of its proper divisors (1).

22490077 is an equidigital number, since it uses as much as digits as its factorization.

22490077 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7056, while the sum is 31.

The square root of 22490077 is about 4742.3703988617. The cubic root of 22490077 is about 282.2693007817.

Adding to 22490077 its reverse (77009422), we get a palindrome (99499499).

The spelling of 22490077 in words is "twenty-two million, four hundred ninety thousand, seventy-seven".