5561005061 has 4 divisors (see below), whose sum is σ = 5579119392. Its totient is φ = 5542890732.

The previous prime is 5561005049. The next prime is 5561005081. The reversal of 5561005061 is 1605001655.

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 not a de Polignac number, because 5561005061 - 2¹⁸ = 5560742917 is a prime.

It is a super-2 number, since 2×5561005061² = 61849554576935227442, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5561005001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9056705 + ... + 9057318.

It is an arithmetic number, because the mean of its divisors is an integer number (1394779848).

Almost surely, 2^5561005061 is an apocalyptic number.

It is an amenable number.

5561005061 is a deficient number, since it is larger than the sum of its proper divisors (18114331).

5561005061 is a wasteful number, since it uses less digits than its factorization.

5561005061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18114330.

The product of its (nonzero) digits is 4500, while the sum is 29.

The square root of 5561005061 is about 74572.1466835976. The cubic root of 5561005061 is about 1771.6765224260.

The spelling of 5561005061 in words is "five billion, five hundred sixty-one million, five thousand, sixty-one".