540905881 has 8 divisors (see below), whose sum is σ = 597625344. Its totient is φ = 486953280.

The previous prime is 540905867. The next prime is 540905891. The reversal of 540905881 is 188509045.

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 540905881 - 2¹³ = 540897689 is a prime.

It is a super-2 number, since 2×540905881² = 585158344200772322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (540905821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 691305 + ... + 692086.

It is an arithmetic number, because the mean of its divisors is an integer number (74703168).

Almost surely, 2^540905881 is an apocalyptic number.

It is an amenable number.

540905881 is a deficient number, since it is larger than the sum of its proper divisors (56719463).

540905881 is a wasteful number, since it uses less digits than its factorization.

540905881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1383431.

The product of its (nonzero) digits is 57600, while the sum is 40.

The square root of 540905881 is about 23257.3833652885. The cubic root of 540905881 is about 814.7803897231.

The spelling of 540905881 in words is "five hundred forty million, nine hundred five thousand, eight hundred eighty-one".