540470881 has 4 divisors (see below), whose sum is σ = 540533700. Its totient is φ = 540408064.

The previous prime is 540470869. The next prime is 540470911. The reversal of 540470881 is 188074045.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 224520256 + 315950625 = 14984^2 + 17775^2 .

It is a cyclic number.

It is not a de Polignac number, because 540470881 - 2⁵ = 540470849 is a prime.

It is a super-2 number, since 2×540470881² = 584217546417832322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 540470881.

It is not an unprimeable number, because it can be changed into a prime (540473881) 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, 15976 + ... + 36553.

It is an arithmetic number, because the mean of its divisors is an integer number (135133425).

Almost surely, 2^540470881 is an apocalyptic number.

It is an amenable number.

540470881 is a deficient number, since it is larger than the sum of its proper divisors (62819).

540470881 is a wasteful number, since it uses less digits than its factorization.

540470881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62818.

The product of its (nonzero) digits is 35840, while the sum is 37.

The square root of 540470881 is about 23248.0296154319. The cubic root of 540470881 is about 814.5619139303.

The spelling of 540470881 in words is "five hundred forty million, four hundred seventy thousand, eight hundred eighty-one".