540551 has 8 divisors (see below), whose sum is σ = 595344. Its totient is φ = 486720.

The previous prime is 540541. The next prime is 540557. The reversal of 540551 is 155045.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-540551 is a prime.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 540551.

It is not an unprimeable number, because it can be changed into a prime (540557) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1571 + ... + 1883.

It is an arithmetic number, because the mean of its divisors is an integer number (74418).

2⁵⁴⁰⁵⁵¹ is an apocalyptic number.

540551 is a deficient number, since it is larger than the sum of its proper divisors (54793).

540551 is a wasteful number, since it uses less digits than its factorization.

540551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 481.

The product of its (nonzero) digits is 500, while the sum is 20.

The square root of 540551 is about 735.2217352609. The cubic root of 540551 is about 81.4602161958.

Adding to 540551 its reverse (155045), we get a palindrome (695596).

The spelling of 540551 in words is "five hundred forty thousand, five hundred fifty-one".