540071 has 4 divisors (see below), whose sum is σ = 617232. Its totient is φ = 462912.

The previous prime is 540061. The next prime is 540079. The reversal of 540071 is 170045.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 540071 - 2¹⁰ = 539047 is a prime.

It is a super-3 number, since 3×540071³ = 472578356900333733, which contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (540079) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38570 + ... + 38583.

It is an arithmetic number, because the mean of its divisors is an integer number (154308).

2⁵⁴⁰⁰⁷¹ is an apocalyptic number.

540071 is a deficient number, since it is larger than the sum of its proper divisors (77161).

540071 is an equidigital number, since it uses as much as digits as its factorization.

540071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77160.

The product of its (nonzero) digits is 140, while the sum is 17.

The square root of 540071 is about 734.8952306281. The cubic root of 540071 is about 81.4360972979.

The spelling of 540071 in words is "five hundred forty thousand, seventy-one".