8540881057 has 4 divisors (see below), whose sum is σ = 8541075136. Its totient is φ = 8540686980.

The previous prime is 8540881033. The next prime is 8540881061. The reversal of 8540881057 is 7501880458.

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 a de Polignac number, because none of the positive numbers 2^k-8540881057 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 8540880998 and 8540881016.

It is not an unprimeable number, because it can be changed into a prime (8540881067) 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, 4132 + ... + 130762.

It is an arithmetic number, because the mean of its divisors is an integer number (2135268784).

Almost surely, 2^8540881057 is an apocalyptic number.

It is an amenable number.

8540881057 is a deficient number, since it is larger than the sum of its proper divisors (194079).

8540881057 is a wasteful number, since it uses less digits than its factorization.

8540881057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194078.

The product of its (nonzero) digits is 358400, while the sum is 46.

The square root of 8540881057 is about 92416.8872933946. The cubic root of 8540881057 is about 2044.0941309031.

The spelling of 8540881057 in words is "eight billion, five hundred forty million, eight hundred eighty-one thousand, fifty-seven".