540242554 has 4 divisors (see below), whose sum is σ = 810363834. Its totient is φ = 270121276.

The previous prime is 540242551. The next prime is 540242579. The reversal of 540242554 is 455242045.

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., 496086529 + 44156025 = 22273^2 + 6645^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (540242551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 135060637 + ... + 135060640.

Almost surely, 2^540242554 is an apocalyptic number.

540242554 is a deficient number, since it is larger than the sum of its proper divisors (270121280).

540242554 is a wasteful number, since it uses less digits than its factorization.

540242554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 270121279.

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

The square root of 540242554 is about 23243.1184224493. The cubic root of 540242554 is about 814.4471913299.

Adding to 540242554 its reverse (455242045), we get a palindrome (995484599).

The spelling of 540242554 in words is "five hundred forty million, two hundred forty-two thousand, five hundred fifty-four".