540545969 has 2 divisors, whose sum is σ = 540545970. Its totient is φ = 540545968.

The previous prime is 540545921. The next prime is 540546043. The reversal of 540545969 is 969545045.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 526105969 + 14440000 = 22937^2 + 3800^2 .

It is a cyclic number.

It is not a de Polignac number, because 540545969 - 2⁸ = 540545713 is a prime.

It is a super-2 number, since 2×540545969² = 584379889204297922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (540545069) 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, 270272984 + 270272985.

It is an arithmetic number, because the mean of its divisors is an integer number (270272985).

Almost surely, 2^540545969 is an apocalyptic number.

It is an amenable number.

540545969 is a deficient number, since it is larger than the sum of its proper divisors (1).

540545969 is an equidigital number, since it uses as much as digits as its factorization.

540545969 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 972000, while the sum is 47.

The square root of 540545969 is about 23249.6444919057. The cubic root of 540545969 is about 814.5996347369.

The spelling of 540545969 in words is "five hundred forty million, five hundred forty-five thousand, nine hundred sixty-nine".