5445521 has 4 divisors (see below), whose sum is σ = 5477172. Its totient is φ = 5413872.

The previous prime is 5445493. The next prime is 5445527. The reversal of 5445521 is 1255445.

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 4363921 + 1081600 = 2089^2 + 1040^2 .

It is a cyclic number.

It is not a de Polignac number, because 5445521 - 2¹⁰ = 5444497 is a prime.

It is a super-2 number, since 2×5445521² = 59307397922882, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5445527) 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 3 ways as a sum of consecutive naturals, for example, 15566 + ... + 15911.

It is an arithmetic number, because the mean of its divisors is an integer number (1369293).

Almost surely, 2^5445521 is an apocalyptic number.

It is an amenable number.

5445521 is a deficient number, since it is larger than the sum of its proper divisors (31651).

5445521 is a wasteful number, since it uses less digits than its factorization.

5445521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31650.

The product of its digits is 4000, while the sum is 26.

The square root of 5445521 is about 2333.5640124068. The cubic root of 5445521 is about 175.9326640656.

The spelling of 5445521 in words is "five million, four hundred forty-five thousand, five hundred twenty-one".