540540551 has 8 divisors (see below), whose sum is σ = 578239200. Its totient is φ = 503497728.

The previous prime is 540540527. The next prime is 540540563. The reversal of 540540551 is 155045045.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 540540551 - 2¹⁴ = 540524167 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (540540151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 162251 + ... + 165548.

It is an arithmetic number, because the mean of its divisors is an integer number (72279900).

Almost surely, 2^540540551 is an apocalyptic number.

540540551 is a deficient number, since it is larger than the sum of its proper divisors (37698649).

540540551 is a wasteful number, since it uses less digits than its factorization.

540540551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 327913.

The product of its (nonzero) digits is 10000, while the sum is 29.

The square root of 540540551 is about 23249.5279737030. The cubic root of 540540551 is about 814.5969130963.

Adding to 540540551 its reverse (155045045), we get a palindrome (695585596).

The spelling of 540540551 in words is "five hundred forty million, five hundred forty thousand, five hundred fifty-one".