5561505601 has 4 divisors (see below), whose sum is σ = 5586445312. Its totient is φ = 5536565892.

The previous prime is 5561505589. The next prime is 5561505611. The reversal of 5561505601 is 1065051655.

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 a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5561505601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5561505611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12469521 + ... + 12469966.

It is an arithmetic number, because the mean of its divisors is an integer number (1396611328).

Almost surely, 2^5561505601 is an apocalyptic number.

It is an amenable number.

5561505601 is a deficient number, since it is larger than the sum of its proper divisors (24939711).

5561505601 is a wasteful number, since it uses less digits than its factorization.

5561505601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24939710.

The product of its (nonzero) digits is 22500, while the sum is 34.

The square root of 5561505601 is about 74575.5026868743. The cubic root of 5561505601 is about 1771.7296763884.

The spelling of 5561505601 in words is "five billion, five hundred sixty-one million, five hundred five thousand, six hundred one".