40751287 has 2 divisors, whose sum is σ = 40751288. Its totient is φ = 40751286.

The previous prime is 40751279. The next prime is 40751297. The reversal of 40751287 is 78215704.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40751287 - 2³ = 40751279 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40751297) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20375643 + 20375644.

It is an arithmetic number, because the mean of its divisors is an integer number (20375644).

Almost surely, 2^40751287 is an apocalyptic number.

40751287 is a deficient number, since it is larger than the sum of its proper divisors (1).

40751287 is an equidigital number, since it uses as much as digits as its factorization.

40751287 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15680, while the sum is 34.

The square root of 40751287 is about 6383.6734722258. The cubic root of 40751287 is about 344.1230602401.

The spelling of 40751287 in words is "forty million, seven hundred fifty-one thousand, two hundred eighty-seven".