540540641 has 4 divisors (see below), whose sum is σ = 564042432. Its totient is φ = 517038852.

The previous prime is 540540629. The next prime is 540540643. The reversal of 540540641 is 146045045.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 540540641 - 2¹⁰ = 540539617 is a prime.

It is not an unprimeable number, because it can be changed into a prime (540540643) 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 3 ways as a sum of consecutive naturals, for example, 11750861 + ... + 11750906.

It is an arithmetic number, because the mean of its divisors is an integer number (141010608).

Almost surely, 2^540540641 is an apocalyptic number.

It is an amenable number.

540540641 is a deficient number, since it is larger than the sum of its proper divisors (23501791).

540540641 is a wasteful number, since it uses less digits than its factorization.

540540641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23501790.

The product of its (nonzero) digits is 9600, while the sum is 29.

The square root of 540540641 is about 23249.5299092261. The cubic root of 540540641 is about 814.5969583064.

Adding to 540540641 its reverse (146045045), we get a palindrome (686585686).

The spelling of 540540641 in words is "five hundred forty million, five hundred forty thousand, six hundred forty-one".