540819 has 6 divisors (see below), whose sum is σ = 781196. Its totient is φ = 360540.

The previous prime is 540809. The next prime is 540823. The reversal of 540819 is 918045.

It is not a de Polignac number, because 540819 - 2⁴ = 540803 is a prime.

It is a super-2 number, since 2×540819² = 584970381522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 540792 and 540801.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 540819.

It is not an unprimeable number, because it can be changed into a prime (540809) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 30037 + ... + 30054.

2⁵⁴⁰⁸¹⁹ is an apocalyptic number.

540819 is a deficient number, since it is larger than the sum of its proper divisors (240377).

540819 is a wasteful number, since it uses less digits than its factorization.

540819 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60097 (or 60094 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 27.

The square root of 540819 is about 735.4039706175. The cubic root of 540819 is about 81.4736763695.

The spelling of 540819 in words is "five hundred forty thousand, eight hundred nineteen".