5561450555 has 4 divisors (see below), whose sum is σ = 6673740672. Its totient is φ = 4449160440.

The previous prime is 5561450513. The next prime is 5561450569. The reversal of 5561450555 is 5550541655.

It is a happy number.

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

It is not a de Polignac number, because 5561450555 - 2⁸ = 5561450299 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 556145051 + ... + 556145060.

It is an arithmetic number, because the mean of its divisors is an integer number (1668435168).

Almost surely, 2^5561450555 is an apocalyptic number.

5561450555 is a deficient number, since it is larger than the sum of its proper divisors (1112290117).

5561450555 is a wasteful number, since it uses less digits than its factorization.

5561450555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1112290116.

The product of its (nonzero) digits is 375000, while the sum is 41.

The square root of 5561450555 is about 74575.1336237489. The cubic root of 5561450555 is about 1771.7238310316.

The spelling of 5561450555 in words is "five billion, five hundred sixty-one million, four hundred fifty thousand, five hundred fifty-five".