540381547 has 2 divisors, whose sum is σ = 540381548. Its totient is φ = 540381546.

The previous prime is 540381539. The next prime is 540381577. The reversal of 540381547 is 745183045.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 540381547 - 2³ = 540381539 is a prime.

It is a super-2 number, since 2×540381547² = 584024432676226418, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (540381577) 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, 270190773 + 270190774.

It is an arithmetic number, because the mean of its divisors is an integer number (270190774).

Almost surely, 2^540381547 is an apocalyptic number.

540381547 is a deficient number, since it is larger than the sum of its proper divisors (1).

540381547 is an equidigital number, since it uses as much as digits as its factorization.

540381547 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 67200, while the sum is 37.

The square root of 540381547 is about 23246.1082119137. The cubic root of 540381547 is about 814.5170320282.

The spelling of 540381547 in words is "five hundred forty million, three hundred eighty-one thousand, five hundred forty-seven".