5051221 has 8 divisors (see below), whose sum is σ = 5789120. Its totient is φ = 4317408.

The previous prime is 5051219. The next prime is 5051243. The reversal of 5051221 is 1221505.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 5051221 - 2¹ = 5051219 is a prime.

It is a Duffinian number.

5051221 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 5051195 and 5051204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5051251) 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 7 ways as a sum of consecutive naturals, for example, 2410 + ... + 3988.

It is an arithmetic number, because the mean of its divisors is an integer number (723640).

Almost surely, 2^5051221 is an apocalyptic number.

It is an amenable number.

5051221 is a deficient number, since it is larger than the sum of its proper divisors (737899).

5051221 is a wasteful number, since it uses less digits than its factorization.

5051221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2043.

The product of its (nonzero) digits is 100, while the sum is 16.

The square root of 5051221 is about 2247.4921579396. The cubic root of 5051221 is about 171.5795232239.

Adding to 5051221 its reverse (1221505), we get a palindrome (6272726).

It can be divided in two parts, 505 and 1221, that multiplied together give a triangular number (616605 = T₁₁₁₀).

The spelling of 5051221 in words is "five million, fifty-one thousand, two hundred twenty-one".