5655510561 has 4 divisors (see below), whose sum is σ = 7540680752. Its totient is φ = 3770340372.

The previous prime is 5655510557. The next prime is 5655510577. The reversal of 5655510561 is 1650155565.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 5655510561 - 2² = 5655510557 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5655510961) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 942585091 + ... + 942585096.

It is an arithmetic number, because the mean of its divisors is an integer number (1885170188).

Almost surely, 2^5655510561 is an apocalyptic number.

It is an amenable number.

5655510561 is a deficient number, since it is larger than the sum of its proper divisors (1885170191).

5655510561 is a wasteful number, since it uses less digits than its factorization.

5655510561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1885170190.

The product of its (nonzero) digits is 112500, while the sum is 39.

The square root of 5655510561 is about 75203.1286649698. The cubic root of 5655510561 is about 1781.6563466576.

The spelling of 5655510561 in words is "five billion, six hundred fifty-five million, five hundred ten thousand, five hundred sixty-one".