540897859 has 4 divisors (see below), whose sum is σ = 541179616. Its totient is φ = 540616104.

The previous prime is 540897839. The next prime is 540897881. The reversal of 540897859 is 958798045.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 540897859 - 2¹³ = 540889667 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (540897829) 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 3 ways as a sum of consecutive naturals, for example, 137979 + ... + 141844.

It is an arithmetic number, because the mean of its divisors is an integer number (135294904).

Almost surely, 2^540897859 is an apocalyptic number.

540897859 is a deficient number, since it is larger than the sum of its proper divisors (281757).

540897859 is a wasteful number, since it uses less digits than its factorization.

540897859 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 281756.

The product of its (nonzero) digits is 3628800, while the sum is 55.

The square root of 540897859 is about 23257.2109032876. The cubic root of 540897859 is about 814.7763617885.

The spelling of 540897859 in words is "five hundred forty million, eight hundred ninety-seven thousand, eight hundred fifty-nine".