540145 has 8 divisors (see below), whose sum is σ = 659520. Its totient is φ = 424560.

The previous prime is 540139. The next prime is 540149. The reversal of 540145 is 541045.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 540145 - 2⁹ = 539633 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (540149) 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 7 ways as a sum of consecutive naturals, for example, 621 + ... + 1210.

It is an arithmetic number, because the mean of its divisors is an integer number (82440).

2⁵⁴⁰¹⁴⁵ is an apocalyptic number.

It is an amenable number.

540145 is a deficient number, since it is larger than the sum of its proper divisors (119375).

540145 is a wasteful number, since it uses less digits than its factorization.

540145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1895.

The product of its (nonzero) digits is 400, while the sum is 19.

The square root of 540145 is about 734.9455762164. The cubic root of 540145 is about 81.4398165595.

Subtracting 540145 from its reverse (541045), we obtain a square (900 = 30²).

The spelling of 540145 in words is "five hundred forty thousand, one hundred forty-five".