5505550561 has 16 divisors (see below), whose sum is σ = 6784767360. Its totient is φ = 4361627520.

The previous prime is 5505550513. The next prime is 5505550601. The reversal of 5505550561 is 1650555055.

It is a cyclic number.

It is not a de Polignac number, because 5505550561 - 2¹⁵ = 5505517793 is a prime.

It is a super-2 number, since 2×5505550561² = 60622173959454829442, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 5505550561.

It is not an unprimeable number, because it can be changed into a prime (5505550511) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 499366 + ... + 510271.

It is an arithmetic number, because the mean of its divisors is an integer number (424047960).

Almost surely, 2^5505550561 is an apocalyptic number.

It is an amenable number.

5505550561 is a deficient number, since it is larger than the sum of its proper divisors (1279216799).

5505550561 is a wasteful number, since it uses less digits than its factorization.

5505550561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1009704.

The product of its (nonzero) digits is 93750, while the sum is 37.

The square root of 5505550561 is about 74199.3973088731. The cubic root of 5505550561 is about 1765.7677684397.

The spelling of 5505550561 in words is "five billion, five hundred five million, five hundred fifty thousand, five hundred sixty-one".