5491665 has 32 divisors (see below), whose sum is σ = 10281600. Its totient is φ = 2773440.

The previous prime is 5491657. The next prime is 5491709. The reversal of 5491665 is 5661945.

It is not a de Polignac number, because 5491665 - 2³ = 5491657 is a prime.

It is a super-3 number, since 3×5491665³ (a number of 21 digits) contains 333 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1495 + ... + 3635.

It is an arithmetic number, because the mean of its divisors is an integer number (321300).

Almost surely, 2^5491665 is an apocalyptic number.

It is an amenable number.

5491665 is a deficient number, since it is larger than the sum of its proper divisors (4789935).

5491665 is a wasteful number, since it uses less digits than its factorization.

5491665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2174 (or 2168 counting only the distinct ones).

The product of its digits is 32400, while the sum is 36.

The square root of 5491665 is about 2343.4301781790. The cubic root of 5491665 is about 176.4282036444.

It can be divided in two parts, 54 and 91665, that added together give a palindrome (91719).

The spelling of 5491665 in words is "five million, four hundred ninety-one thousand, six hundred sixty-five".