540871 has 2 divisors, whose sum is σ = 540872. Its totient is φ = 540870.

The previous prime is 540863. The next prime is 540877. The reversal of 540871 is 178045.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 540871 - 2³ = 540863 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (540877) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 270435 + 270436.

It is an arithmetic number, because the mean of its divisors is an integer number (270436).

2⁵⁴⁰⁸⁷¹ is an apocalyptic number.

540871 is a deficient number, since it is larger than the sum of its proper divisors (1).

540871 is an equidigital number, since it uses as much as digits as its factorization.

540871 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1120, while the sum is 25.

The square root of 540871 is about 735.4393244857. The cubic root of 540871 is about 81.4762875299.

The spelling of 540871 in words is "five hundred forty thousand, eight hundred seventy-one".