22601287 has 2 divisors, whose sum is σ = 22601288. Its totient is φ = 22601286.

The previous prime is 22601281. The next prime is 22601321. The reversal of 22601287 is 78210622.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22601287 - 2¹⁵ = 22568519 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22601281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11300643 + 11300644.

It is an arithmetic number, because the mean of its divisors is an integer number (11300644).

Almost surely, 2^22601287 is an apocalyptic number.

22601287 is a deficient number, since it is larger than the sum of its proper divisors (1).

22601287 is an equidigital number, since it uses as much as digits as its factorization.

22601287 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2688, while the sum is 28.

The square root of 22601287 is about 4754.0810889172. The cubic root of 22601287 is about 282.7337955468.

The spelling of 22601287 in words is "twenty-two million, six hundred one thousand, two hundred eighty-seven".