5150221 has 2 divisors, whose sum is σ = 5150222. Its totient is φ = 5150220.

The previous prime is 5150219. The next prime is 5150237. The reversal of 5150221 is 1220515.

It is an a-pointer prime, because the next prime (5150237) can be obtained adding 5150221 to its sum of digits (16).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4247721 + 902500 = 2061^2 + 950^2 .

It is a cyclic number.

It is not a de Polignac number, because 5150221 - 2¹ = 5150219 is a prime.

Together with 5150219, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 5150195 and 5150204.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5150251) 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 as a sum of consecutive naturals, namely, 2575110 + 2575111.

It is an arithmetic number, because the mean of its divisors is an integer number (2575111).

Almost surely, 2^5150221 is an apocalyptic number.

It is an amenable number.

5150221 is a deficient number, since it is larger than the sum of its proper divisors (1).

5150221 is an equidigital number, since it uses as much as digits as its factorization.

5150221 is an odious number, because the sum of its binary digits is odd.

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

The square root of 5150221 is about 2269.4098351774. The cubic root of 5150221 is about 172.6932204424.

Adding to 5150221 its reverse (1220515), we get a palindrome (6370736).

The spelling of 5150221 in words is "five million, one hundred fifty thousand, two hundred twenty-one".