5449581761 has 8 divisors (see below), whose sum is σ = 6214002984. Its totient is φ = 4734478080.

The previous prime is 5449581749. The next prime is 5449581769. The reversal of 5449581761 is 1671859445.

It can be written as a sum of positive squares in 4 ways, for example, as 465221761 + 4984360000 = 21569^2 + 70600^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5449581761 is a prime.

It is a super-2 number, since 2×5449581761² = 59395882739647722242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5449581769) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12329150 + ... + 12329591.

It is an arithmetic number, because the mean of its divisors is an integer number (776750373).

Almost surely, 2^5449581761 is an apocalyptic number.

It is an amenable number.

5449581761 is a deficient number, since it is larger than the sum of its proper divisors (764421223).

5449581761 is a wasteful number, since it uses less digits than its factorization.

5449581761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24658771.

The product of its digits is 1209600, while the sum is 50.

The square root of 5449581761 is about 73821.2825748781. The cubic root of 5449581761 is about 1759.7638458327.

The spelling of 5449581761 in words is "five billion, four hundred forty-nine million, five hundred eighty-one thousand, seven hundred sixty-one".