540021193 has 2 divisors, whose sum is σ = 540021194. Its totient is φ = 540021192.

The previous prime is 540021161. The next prime is 540021221. The reversal of 540021193 is 391120045.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 282643344 + 257377849 = 16812^2 + 16043^2 .

It is a cyclic number.

It is not a de Polignac number, because 540021193 - 2⁵ = 540021161 is a prime.

It is not a weakly prime, because it can be changed into another prime (540021113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 270010596 + 270010597.

It is an arithmetic number, because the mean of its divisors is an integer number (270010597).

Almost surely, 2^540021193 is an apocalyptic number.

It is an amenable number.

540021193 is a deficient number, since it is larger than the sum of its proper divisors (1).

540021193 is an equidigital number, since it uses as much as digits as its factorization.

540021193 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 540021193 is about 23238.3560735264. The cubic root of 540021193 is about 814.3359379229.

The spelling of 540021193 in words is "five hundred forty million, twenty-one thousand, one hundred ninety-three".