5511000561 has 32 divisors (see below), whose sum is σ = 8076042240. Its totient is φ = 3315081600.

The previous prime is 5511000533. The next prime is 5511000563. The reversal of 5511000561 is 1650001155.

It is not a de Polignac number, because 5511000561 - 2¹⁴ = 5510984177 is a prime.

It is a super-2 number, since 2×5511000561² = 60742254366684629442, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (5511000563) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3008916 + ... + 3010746.

It is an arithmetic number, because the mean of its divisors is an integer number (252376320).

Almost surely, 2^5511000561 is an apocalyptic number.

It is an amenable number.

5511000561 is a deficient number, since it is larger than the sum of its proper divisors (2565041679).

5511000561 is a wasteful number, since it uses less digits than its factorization.

5511000561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2477.

The product of its (nonzero) digits is 750, while the sum is 24.

The square root of 5511000561 is about 74236.1135903544. The cubic root of 5511000561 is about 1766.3502267262.

The spelling of 5511000561 in words is "five billion, five hundred eleven million, five hundred sixty-one", and thus it is an aban number.