540571 has 4 divisors (see below), whose sum is σ = 544600. Its totient is φ = 536544.

The previous prime is 540559. The next prime is 540577. The reversal of 540571 is 175045.

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 540571 - 2⁵ = 540539 is a prime.

It is a Duffinian number.

540571 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (540577) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1806 + ... + 2083.

It is an arithmetic number, because the mean of its divisors is an integer number (136150).

2⁵⁴⁰⁵⁷¹ is an apocalyptic number.

540571 is a deficient number, since it is larger than the sum of its proper divisors (4029).

540571 is a wasteful number, since it uses less digits than its factorization.

540571 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4028.

The product of its (nonzero) digits is 700, while the sum is 22.

The square root of 540571 is about 735.2353364740. The cubic root of 540571 is about 81.4612208400.

It can be divided in two parts, 5405 and 71, that added together give a square (5476 = 74²).

The spelling of 540571 in words is "five hundred forty thousand, five hundred seventy-one".