5445021 has 4 divisors (see below), whose sum is σ = 7260032. Its totient is φ = 3630012.

The previous prime is 5445019. The next prime is 5445029. The reversal of 5445021 is 1205445.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 5445021 - 2¹ = 5445019 is a prime.

It is a super-3 number, since 3×5445021³ (a number of 21 digits) contains 333 as substring.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5445029) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 907501 + ... + 907506.

It is an arithmetic number, because the mean of its divisors is an integer number (1815008).

Almost surely, 2^5445021 is an apocalyptic number.

It is an amenable number.

5445021 is a deficient number, since it is larger than the sum of its proper divisors (1815011).

5445021 is a wasteful number, since it uses less digits than its factorization.

5445021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1815010.

The product of its (nonzero) digits is 800, while the sum is 21.

The square root of 5445021 is about 2333.4568776817. The cubic root of 5445021 is about 175.9272792717.

It can be divided in two parts, 544 and 5021, that added together give a triangular number (5565 = T₁₀₅).

The spelling of 5445021 in words is "five million, four hundred forty-five thousand, twenty-one".