5245221 has 4 divisors (see below), whose sum is σ = 6993632. Its totient is φ = 3496812.

The previous prime is 5245211. The next prime is 5245223. The reversal of 5245221 is 1225425.

It is a happy number.

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 5245221 - 2⁹ = 5244709 is a prime.

It is a D-number.

It is a Duffinian number.

It is a Curzon number.

5245221 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5245223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 874201 + ... + 874206.

It is an arithmetic number, because the mean of its divisors is an integer number (1748408).

Almost surely, 2^5245221 is an apocalyptic number.

It is an amenable number.

5245221 is a deficient number, since it is larger than the sum of its proper divisors (1748411).

5245221 is a wasteful number, since it uses less digits than its factorization.

5245221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1748410.

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

The square root of 5245221 is about 2290.2447467465. The cubic root of 5245221 is about 173.7485799446.

The spelling of 5245221 in words is "five million, two hundred forty-five thousand, two hundred twenty-one".