15140287 has 2 divisors, whose sum is σ = 15140288. Its totient is φ = 15140286.

The previous prime is 15140267. The next prime is 15140299. The reversal of 15140287 is 78204151.

It is a strong prime.

It is an emirp because it is prime and its reverse (78204151) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 15140287 - 2¹¹ = 15138239 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15140227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7570143 + 7570144.

It is an arithmetic number, because the mean of its divisors is an integer number (7570144).

Almost surely, 2^15140287 is an apocalyptic number.

15140287 is the 2247-th hex number.

15140287 is a deficient number, since it is larger than the sum of its proper divisors (1).

15140287 is an equidigital number, since it uses as much as digits as its factorization.

15140287 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2240, while the sum is 28.

The square root of 15140287 is about 3891.0521713285. The cubic root of 15140287 is about 247.3876618368.

The spelling of 15140287 in words is "fifteen million, one hundred forty thousand, two hundred eighty-seven".