540281161 has 4 divisors (see below), whose sum is σ = 617464192. Its totient is φ = 463098132.

The previous prime is 540281143. The next prime is 540281177. The reversal of 540281161 is 161182045.

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 not a de Polignac number, because 540281161 - 2⁷ = 540281033 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (540281101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38591505 + ... + 38591518.

It is an arithmetic number, because the mean of its divisors is an integer number (154366048).

Almost surely, 2^540281161 is an apocalyptic number.

It is an amenable number.

540281161 is a deficient number, since it is larger than the sum of its proper divisors (77183031).

540281161 is an equidigital number, since it uses as much as digits as its factorization.

540281161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77183030.

The product of its (nonzero) digits is 1920, while the sum is 28.

The square root of 540281161 is about 23243.9489114909. The cubic root of 540281161 is about 814.4665916366.

The spelling of 540281161 in words is "five hundred forty million, two hundred eighty-one thousand, one hundred sixty-one".