5491272385 has 4 divisors (see below), whose sum is σ = 6589526868. Its totient is φ = 4393017904.

The previous prime is 5491272377. The next prime is 5491272439. The reversal of 5491272385 is 5832721945.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 966961216 + 4524311169 = 31096^2 + 67263^2 .

It is a cyclic number.

It is not a de Polignac number, because 5491272385 - 2³ = 5491272377 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 549127234 + ... + 549127243.

It is an arithmetic number, because the mean of its divisors is an integer number (1647381717).

Almost surely, 2^5491272385 is an apocalyptic number.

It is an amenable number.

5491272385 is a deficient number, since it is larger than the sum of its proper divisors (1098254483).

5491272385 is a wasteful number, since it uses less digits than its factorization.

5491272385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1098254482.

The product of its digits is 604800, while the sum is 46.

The square root of 5491272385 is about 74103.1199410659. The cubic root of 5491272385 is about 1764.2399909021.

The spelling of 5491272385 in words is "five billion, four hundred ninety-one million, two hundred seventy-two thousand, three hundred eighty-five".