11651287 has 2 divisors, whose sum is σ = 11651288. Its totient is φ = 11651286.

The previous prime is 11651281. The next prime is 11651293. The reversal of 11651287 is 78215611.

It is a balanced prime because it is at equal distance from previous prime (11651281) and next prime (11651293).

It is a cyclic number.

It is not a de Polignac number, because 11651287 - 2³ = 11651279 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11651281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5825643 + 5825644.

It is an arithmetic number, because the mean of its divisors is an integer number (5825644).

Almost surely, 2^11651287 is an apocalyptic number.

11651287 is a deficient number, since it is larger than the sum of its proper divisors (1).

11651287 is an equidigital number, since it uses as much as digits as its factorization.

11651287 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3360, while the sum is 31.

The square root of 11651287 is about 3413.3981601917. The cubic root of 11651287 is about 226.7033651172.

Adding to 11651287 its reverse (78215611), we get a palindrome (89866898).

The spelling of 11651287 in words is "eleven million, six hundred fifty-one thousand, two hundred eighty-seven".