5545521 has 6 divisors (see below), whose sum is σ = 8010210. Its totient is φ = 3697008.

The previous prime is 5545513. The next prime is 5545531. The reversal of 5545521 is 1255455.

5545521 is nontrivially palindromic in base 6.

It can be written as a sum of positive squares in only one way, i.e., 3186225 + 2359296 = 1785^2 + 1536^2 .

It is not a de Polignac number, because 5545521 - 2³ = 5545513 is a prime.

It is a super-2 number, since 2×5545521² = 61505606322882, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (5545531) 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 5 ways as a sum of consecutive naturals, for example, 308076 + ... + 308093.

It is an arithmetic number, because the mean of its divisors is an integer number (1335035).

Almost surely, 2^5545521 is an apocalyptic number.

It is an amenable number.

5545521 is a deficient number, since it is larger than the sum of its proper divisors (2464689).

5545521 is a wasteful number, since it uses less digits than its factorization.

5545521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 616175 (or 616172 counting only the distinct ones).

The product of its digits is 5000, while the sum is 27.

The square root of 5545521 is about 2354.8929911994. The cubic root of 5545521 is about 177.0030642005.

The spelling of 5545521 in words is "five million, five hundred forty-five thousand, five hundred twenty-one".