5561326081 has 8 divisors (see below), whose sum is σ = 5582001600. Its totient is φ = 5540680080.

The previous prime is 5561326051. The next prime is 5561326097. The reversal of 5561326081 is 1806231655.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 5561326081 - 2¹⁵ = 5561293313 is a prime.

It is a super-2 number, since 2×5561326081² = 61856695558421637122, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 5561326081.

It is not an unprimeable number, because it can be changed into a prime (5561326021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 413775 + ... + 427003.

It is an arithmetic number, because the mean of its divisors is an integer number (697750200).

Almost surely, 2^5561326081 is an apocalyptic number.

It is an amenable number.

5561326081 is a deficient number, since it is larger than the sum of its proper divisors (20675519).

5561326081 is a wasteful number, since it uses less digits than its factorization.

5561326081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14759.

The product of its (nonzero) digits is 43200, while the sum is 37.

The square root of 5561326081 is about 74574.2990647582. The cubic root of 5561326081 is about 1771.7106129454.

The spelling of 5561326081 in words is "five billion, five hundred sixty-one million, three hundred twenty-six thousand, eighty-one".