22427501 has 2 divisors, whose sum is σ = 22427502. Its totient is φ = 22427500.

The previous prime is 22427491. The next prime is 22427519. The reversal of 22427501 is 10572422.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15132100 + 7295401 = 3890^2 + 2701^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22427501 is a prime.

It is a super-2 number, since 2×22427501² = 1005985602210002, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22426501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11213750 + 11213751.

It is an arithmetic number, because the mean of its divisors is an integer number (11213751).

Almost surely, 2^22427501 is an apocalyptic number.

It is an amenable number.

22427501 is a deficient number, since it is larger than the sum of its proper divisors (1).

22427501 is an equidigital number, since it uses as much as digits as its factorization.

22427501 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1120, while the sum is 23.

The square root of 22427501 is about 4735.7682586883. The cubic root of 22427501 is about 282.0072638674.

Adding to 22427501 its reverse (10572422), we get a palindrome (32999923).

The spelling of 22427501 in words is "twenty-two million, four hundred twenty-seven thousand, five hundred one".