5159221 has 4 divisors (see below), whose sum is σ = 5166700. Its totient is φ = 5151744.

The previous prime is 5159213. The next prime is 5159227. The reversal of 5159221 is 1229515.

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 2722500 + 2436721 = 1650^2 + 1561^2 .

It is a cyclic number.

It is not a de Polignac number, because 5159221 - 2³ = 5159213 is a prime.

It is a super-2 number, since 2×5159221² = 53235122653682, which contains 22 as substring.

It is a Duffinian number.

5159221 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5159227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2586 + ... + 4123.

It is an arithmetic number, because the mean of its divisors is an integer number (1291675).

Almost surely, 2^5159221 is an apocalyptic number.

It is an amenable number.

5159221 is a deficient number, since it is larger than the sum of its proper divisors (7479).

5159221 is an equidigital number, since it uses as much as digits as its factorization.

5159221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7478.

The product of its digits is 900, while the sum is 25.

The square root of 5159221 is about 2271.3918640340. The cubic root of 5159221 is about 172.7937555792.

The spelling of 5159221 in words is "five million, one hundred fifty-nine thousand, two hundred twenty-one".