5581541761 has 4 divisors (see below), whose sum is σ = 5584032432. Its totient is φ = 5579051092.

The previous prime is 5581541741. The next prime is 5581541789. The reversal of 5581541761 is 1671451855.

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, and also an emirpimes, since its reverse is a distinct semiprime: 1671451855 = 5 ⋅334290371.

It is a cyclic number.

It is not a de Polignac number, because 5581541761 - 2²⁹ = 5044670849 is a prime.

It is a super-2 number, since 2×5581541761² = 62307216859573962242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5581541741) 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, 1241971 + ... + 1246456.

It is an arithmetic number, because the mean of its divisors is an integer number (1396008108).

Almost surely, 2^5581541761 is an apocalyptic number.

It is an amenable number.

5581541761 is a deficient number, since it is larger than the sum of its proper divisors (2490671).

5581541761 is a wasteful number, since it uses less digits than its factorization.

5581541761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2490670.

The product of its digits is 168000, while the sum is 43.

The square root of 5581541761 is about 74709.7166438208. The cubic root of 5581541761 is about 1773.8547672769.

The spelling of 5581541761 in words is "five billion, five hundred eighty-one million, five hundred forty-one thousand, seven hundred sixty-one".