540097 has 4 divisors (see below), whose sum is σ = 547776. Its totient is φ = 532420.

The previous prime is 540079. The next prime is 540101. The reversal of 540097 is 790045.

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, and also an emirpimes, since its reverse is a distinct semiprime: 790045 = 5 ⋅158009.

It is a cyclic number.

It is not a de Polignac number, because 540097 - 2¹¹ = 538049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (540697) 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, 3733 + ... + 3874.

It is an arithmetic number, because the mean of its divisors is an integer number (136944).

2⁵⁴⁰⁰⁹⁷ is an apocalyptic number.

It is an amenable number.

540097 is a deficient number, since it is larger than the sum of its proper divisors (7679).

540097 is an equidigital number, since it uses as much as digits as its factorization.

540097 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7678.

The product of its (nonzero) digits is 1260, while the sum is 25.

The square root of 540097 is about 734.9129200116. The cubic root of 540097 is about 81.4374041042.

The spelling of 540097 in words is "five hundred forty thousand, ninety-seven".