5081221 has 4 divisors (see below), whose sum is σ = 5107212. Its totient is φ = 5055232.

The previous prime is 5081191. The next prime is 5081231. The reversal of 5081221 is 1221805.

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 2873025 + 2208196 = 1695^2 + 1486^2 .

It is a cyclic number.

It is not a de Polignac number, because 5081221 - 2⁹ = 5080709 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5081231) 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, 12700 + ... + 13093.

It is an arithmetic number, because the mean of its divisors is an integer number (1276803).

Almost surely, 2^5081221 is an apocalyptic number.

It is an amenable number.

5081221 is a deficient number, since it is larger than the sum of its proper divisors (25991).

5081221 is a wasteful number, since it uses less digits than its factorization.

5081221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25990.

The product of its (nonzero) digits is 160, while the sum is 19.

The square root of 5081221 is about 2254.1563832175. The cubic root of 5081221 is about 171.9185322680.

The spelling of 5081221 in words is "five million, eighty-one thousand, two hundred twenty-one".