50903221 has 2 divisors, whose sum is σ = 50903222. Its totient is φ = 50903220.

The previous prime is 50903201. The next prime is 50903227. The reversal of 50903221 is 12230905.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 45562500 + 5340721 = 6750^2 + 2311^2 .

It is a cyclic number.

It is not a de Polignac number, because 50903221 - 2⁵ = 50903189 is a prime.

It is a super-2 number, since 2×50903221² = 5182275816349682, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 50903192 and 50903201.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (50903227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25451610 + 25451611.

It is an arithmetic number, because the mean of its divisors is an integer number (25451611).

Almost surely, 2^50903221 is an apocalyptic number.

It is an amenable number.

50903221 is a deficient number, since it is larger than the sum of its proper divisors (1).

50903221 is an equidigital number, since it uses as much as digits as its factorization.

50903221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 540, while the sum is 22.

The square root of 50903221 is about 7134.6493256501. The cubic root of 50903221 is about 370.6082544543.

The spelling of 50903221 in words is "fifty million, nine hundred three thousand, two hundred twenty-one".