540863987 has 2 divisors, whose sum is σ = 540863988. Its totient is φ = 540863986.

The previous prime is 540863969. The next prime is 540864011. The reversal of 540863987 is 789368045.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 540863987 - 2¹⁸ = 540601843 is a prime.

It is not a weakly prime, because it can be changed into another prime (540866987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 270431993 + 270431994.

It is an arithmetic number, because the mean of its divisors is an integer number (270431994).

Almost surely, 2^540863987 is an apocalyptic number.

540863987 is a deficient number, since it is larger than the sum of its proper divisors (1).

540863987 is an equidigital number, since it uses as much as digits as its factorization.

540863987 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1451520, while the sum is 50.

The square root of 540863987 is about 23256.4826876293. The cubic root of 540863987 is about 814.7593538448.

The spelling of 540863987 in words is "five hundred forty million, eight hundred sixty-three thousand, nine hundred eighty-seven".