540545044 has 24 divisors (see below), whose sum is σ = 1020371688. Its totient is φ = 249077760.

The previous prime is 540545021. The next prime is 540545059. The reversal of 540545044 is 440545045.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 169520400 + 371024644 = 13020^2 + 19262^2 .

It is a junction number, because it is equal to n+sod(n) for n = 540544997 and 540545015.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25224 + ... + 41440.

It is an arithmetic number, because the mean of its divisors is an integer number (42515487).

Almost surely, 2^540545044 is an apocalyptic number.

It is an amenable number.

540545044 is a deficient number, since it is larger than the sum of its proper divisors (479826644).

540545044 is a wasteful number, since it uses less digits than its factorization.

540545044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16875 (or 16873 counting only the distinct ones).

The product of its (nonzero) digits is 32000, while the sum is 31.

The square root of 540545044 is about 23249.6245991199. The cubic root of 540545044 is about 814.5991700801.

Subtracting from 540545044 its reverse (440545045), we obtain a palindrome (99999999).

The spelling of 540545044 in words is "five hundred forty million, five hundred forty-five thousand, forty-four".