540061 has 2 divisors, whose sum is σ = 540062. Its totient is φ = 540060.

The previous prime is 540041. The next prime is 540079. The reversal of 540061 is 160045.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 337561 + 202500 = 581^2 + 450^2 .

It is a cyclic number.

It is not a de Polignac number, because 540061 - 2¹⁹ = 15773 is a prime.

It is an Ulam number.

540061 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (540041) by changing a digit.

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

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 270030 + 270031.

It is an arithmetic number, because the mean of its divisors is an integer number (270031).

2⁵⁴⁰⁰⁶¹ is an apocalyptic number.

It is an amenable number.

540061 is a deficient number, since it is larger than the sum of its proper divisors (1).

540061 is an equidigital number, since it uses as much as digits as its factorization.

540061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 540061 is about 734.8884269057. Note that the first 3 decimals coincide. The cubic root of 540061 is about 81.4355946690.

Subtracting from 540061 its sum of digits (16), we obtain a palindrome (540045).

The spelling of 540061 in words is "five hundred forty thousand, sixty-one".