540771421 has 2 divisors, whose sum is σ = 540771422. Its totient is φ = 540771420.

The previous prime is 540771383. The next prime is 540771437. The reversal of 540771421 is 124177045.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 467856900 + 72914521 = 21630^2 + 8539^2 .

It is a cyclic number.

It is not a de Polignac number, because 540771421 - 2¹⁷ = 540640349 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (540771481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 270385710 + 270385711.

It is an arithmetic number, because the mean of its divisors is an integer number (270385711).

Almost surely, 2^540771421 is an apocalyptic number.

It is an amenable number.

540771421 is a deficient number, since it is larger than the sum of its proper divisors (1).

540771421 is an equidigital number, since it uses as much as digits as its factorization.

540771421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7840, while the sum is 31.

The square root of 540771421 is about 23254.4924906995. The cubic root of 540771421 is about 814.7128706135.

The spelling of 540771421 in words is "five hundred forty million, seven hundred seventy-one thousand, four hundred twenty-one".