5517533081 has 4 divisors (see below), whose sum is σ = 5517682212. Its totient is φ = 5517383952.

The previous prime is 5517533059. The next prime is 5517533083. The reversal of 5517533081 is 1803357155.

It is a happy number.

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 3144966400 + 2372566681 = 56080^2 + 48709^2 .

It is a cyclic number.

It is not a de Polignac number, because 5517533081 - 2¹⁸ = 5517270937 is a prime.

It is a super-2 number, since 2×5517533081² = 60886342599858705122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5517533083) 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, 27515 + ... + 108591.

It is an arithmetic number, because the mean of its divisors is an integer number (1379420553).

Almost surely, 2^5517533081 is an apocalyptic number.

It is an amenable number.

5517533081 is a deficient number, since it is larger than the sum of its proper divisors (149131).

5517533081 is an equidigital number, since it uses as much as digits as its factorization.

5517533081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149130.

The product of its (nonzero) digits is 63000, while the sum is 38.

The square root of 5517533081 is about 74280.0988219590. The cubic root of 5517533081 is about 1767.0478714870.

The spelling of 5517533081 in words is "five billion, five hundred seventeen million, five hundred thirty-three thousand, eighty-one".