5491521 has 24 divisors (see below), whose sum is σ = 9207744. Its totient is φ = 3088800.

The previous prime is 5491511. The next prime is 5491523. The reversal of 5491521 is 1251945.

5491521 is a `hidden beast` number, since 54 + 91 + 521 = 666.

It is not a de Polignac number, because 5491521 - 2⁷ = 5491393 is a prime.

It is not an unprimeable number, because it can be changed into a prime (5491523) 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 23 ways as a sum of consecutive naturals, for example, 3571 + ... + 4871.

It is an arithmetic number, because the mean of its divisors is an integer number (383656).

Almost surely, 2^5491521 is an apocalyptic number.

It is an amenable number.

5491521 is a deficient number, since it is larger than the sum of its proper divisors (3716223).

5491521 is a wasteful number, since it uses less digits than its factorization.

5491521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1381 (or 1378 counting only the distinct ones).

The product of its digits is 1800, while the sum is 27.

The square root of 5491521 is about 2343.3994537850. The cubic root of 5491521 is about 176.4266615570.

The spelling of 5491521 in words is "five million, four hundred ninety-one thousand, five hundred twenty-one".