540269 has 2 divisors, whose sum is σ = 540270. Its totient is φ = 540268.

The previous prime is 540251. The next prime is 540271. The reversal of 540269 is 962045.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 407044 + 133225 = 638^2 + 365^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-540269 is a prime.

It is a super-2 number, since 2×540269² = 583781184722, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 540271, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 540269.

It is not a weakly prime, because it can be changed into another prime (540469) 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 as a sum of consecutive naturals, namely, 270134 + 270135.

It is an arithmetic number, because the mean of its divisors is an integer number (270135).

2⁵⁴⁰²⁶⁹ is an apocalyptic number.

It is an amenable number.

540269 is a deficient number, since it is larger than the sum of its proper divisors (1).

540269 is an equidigital number, since it uses as much as digits as its factorization.

540269 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 540269 is about 735.0299313633. The cubic root of 540269 is about 81.4460480743.

The spelling of 540269 in words is "five hundred forty thousand, two hundred sixty-nine".