540973 has 4 divisors (see below), whose sum is σ = 542880. Its totient is φ = 539068.

The previous prime is 540961. The next prime is 540989. The reversal of 540973 is 379045.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 540973 - 2⁹ = 540461 is a prime.

It is a Duffinian number.

540973 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (540173) 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 in 3 ways as a sum of consecutive naturals, for example, 433 + ... + 1126.

It is an arithmetic number, because the mean of its divisors is an integer number (135720).

2⁵⁴⁰⁹⁷³ is an apocalyptic number.

It is an amenable number.

540973 is a deficient number, since it is larger than the sum of its proper divisors (1907).

540973 is a wasteful number, since it uses less digits than its factorization.

540973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1906.

The product of its (nonzero) digits is 3780, while the sum is 28.

The square root of 540973 is about 735.5086675220. The cubic root of 540973 is about 81.4814089352.

The spelling of 540973 in words is "five hundred forty thousand, nine hundred seventy-three".