540275381 has 2 divisors, whose sum is σ = 540275382. Its totient is φ = 540275380.

The previous prime is 540275363. The next prime is 540275389. The reversal of 540275381 is 183572045.

It is a happy number.

540275381 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 415752100 + 124523281 = 20390^2 + 11159^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-540275381 is a prime.

It is a super-2 number, since 2×540275381² = 583794974629390322, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (540275389) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 270137690 + 270137691.

It is an arithmetic number, because the mean of its divisors is an integer number (270137691).

Almost surely, 2^540275381 is an apocalyptic number.

It is an amenable number.

540275381 is a deficient number, since it is larger than the sum of its proper divisors (1).

540275381 is an equidigital number, since it uses as much as digits as its factorization.

540275381 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 33600, while the sum is 35.

The square root of 540275381 is about 23243.8245777239. The cubic root of 540275381 is about 814.4636872021.

The spelling of 540275381 in words is "five hundred forty million, two hundred seventy-five thousand, three hundred eighty-one".