540540554 has 4 divisors (see below), whose sum is σ = 810810834. Its totient is φ = 270270276.

The previous prime is 540540527. The next prime is 540540563. The reversal of 540540554 is 455045045.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 537173329 + 3367225 = 23177^2 + 1835^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 540540554.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 135135137 + ... + 135135140.

Almost surely, 2^540540554 is an apocalyptic number.

540540554 is a deficient number, since it is larger than the sum of its proper divisors (270270280).

540540554 is a wasteful number, since it uses less digits than its factorization.

540540554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 270270279.

The product of its (nonzero) digits is 40000, while the sum is 32.

The square root of 540540554 is about 23249.5280382205. The cubic root of 540540554 is about 814.5969146033.

Adding to 540540554 its reverse (455045045), we get a palindrome (995585599).

The spelling of 540540554 in words is "five hundred forty million, five hundred forty thousand, five hundred fifty-four".