540775969 has 2 divisors, whose sum is σ = 540775970. Its totient is φ = 540775968.

The previous prime is 540775957. The next prime is 540775987. The reversal of 540775969 is 969577045.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 321735969 + 219040000 = 17937^2 + 14800^2 .

It is a cyclic number.

It is not a de Polignac number, because 540775969 - 2⁷ = 540775841 is a prime.

It is a super-2 number, since 2×540775969² = 584877297295777922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (540775069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 270387984 + 270387985.

It is an arithmetic number, because the mean of its divisors is an integer number (270387985).

Almost surely, 2^540775969 is an apocalyptic number.

It is an amenable number.

540775969 is a deficient number, since it is larger than the sum of its proper divisors (1).

540775969 is an equidigital number, since it uses as much as digits as its factorization.

540775969 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2381400, while the sum is 52.

The square root of 540775969 is about 23254.5902780505. The cubic root of 540775969 is about 814.7151545753.

The spelling of 540775969 in words is "five hundred forty million, seven hundred seventy-five thousand, nine hundred sixty-nine".