45840287 has 2 divisors, whose sum is σ = 45840288. Its totient is φ = 45840286.

The previous prime is 45840281. The next prime is 45840317. The reversal of 45840287 is 78204854.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 45840287 - 2¹² = 45836191 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 45840287.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (45840281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22920143 + 22920144.

It is an arithmetic number, because the mean of its divisors is an integer number (22920144).

Almost surely, 2^45840287 is an apocalyptic number.

45840287 is a deficient number, since it is larger than the sum of its proper divisors (1).

45840287 is an equidigital number, since it uses as much as digits as its factorization.

45840287 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 71680, while the sum is 38.

The square root of 45840287 is about 6770.5455467045. The cubic root of 45840287 is about 357.8896255769.

The spelling of 45840287 in words is "forty-five million, eight hundred forty thousand, two hundred eighty-seven".