50529221 has 2 divisors, whose sum is σ = 50529222. Its totient is φ = 50529220.

The previous prime is 50529203. The next prime is 50529247. The reversal of 50529221 is 12292505.

It is an a-pointer prime, because the next prime (50529247) can be obtained adding 50529221 to its sum of digits (26).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 50268100 + 261121 = 7090^2 + 511^2 .

It is a cyclic number.

It is not a de Polignac number, because 50529221 - 2²² = 46334917 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (50529251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25264610 + 25264611.

It is an arithmetic number, because the mean of its divisors is an integer number (25264611).

Almost surely, 2^50529221 is an apocalyptic number.

It is an amenable number.

50529221 is a deficient number, since it is larger than the sum of its proper divisors (1).

50529221 is an equidigital number, since it uses as much as digits as its factorization.

50529221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1800, while the sum is 26.

The square root of 50529221 is about 7108.3908868323. The cubic root of 50529221 is about 369.6983687316.

The spelling of 50529221 in words is "fifty million, five hundred twenty-nine thousand, two hundred twenty-one".