5577811081 has 4 divisors (see below), whose sum is σ = 5585027652. Its totient is φ = 5570594512.

The previous prime is 5577811073. The next prime is 5577811097. The reversal of 5577811081 is 1801187755.

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

It can be written as a sum of positive squares in 2 ways, for example, as 2815257481 + 2762553600 = 53059^2 + 52560^2 .

It is a cyclic number.

It is not a de Polignac number, because 5577811081 - 2³ = 5577811073 is a prime.

It is a super-3 number, since 3×5577811081³ (a number of 30 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5577811021) 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, 3607126 + ... + 3608671.

It is an arithmetic number, because the mean of its divisors is an integer number (1396256913).

Almost surely, 2^5577811081 is an apocalyptic number.

It is an amenable number.

5577811081 is a deficient number, since it is larger than the sum of its proper divisors (7216571).

5577811081 is an equidigital number, since it uses as much as digits as its factorization.

5577811081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7216570.

The product of its (nonzero) digits is 78400, while the sum is 43.

The square root of 5577811081 is about 74684.7446336934. The cubic root of 5577811081 is about 1773.4594667342.

The spelling of 5577811081 in words is "five billion, five hundred seventy-seven million, eight hundred eleven thousand, eighty-one".