50249821 has 2 divisors, whose sum is σ = 50249822. Its totient is φ = 50249820.

The previous prime is 50249809. The next prime is 50249827. The reversal of 50249821 is 12894205.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 49632025 + 617796 = 7045^2 + 786^2 .

It is a cyclic number.

It is not a de Polignac number, because 50249821 - 2¹⁷ = 50118749 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (50249827) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25124910 + 25124911.

It is an arithmetic number, because the mean of its divisors is an integer number (25124911).

Almost surely, 2^50249821 is an apocalyptic number.

It is an amenable number.

50249821 is a deficient number, since it is larger than the sum of its proper divisors (1).

50249821 is an equidigital number, since it uses as much as digits as its factorization.

50249821 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5760, while the sum is 31.

The square root of 50249821 is about 7088.7108136811. The cubic root of 50249821 is about 369.0156964360.

The spelling of 50249821 in words is "fifty million, two hundred forty-nine thousand, eight hundred twenty-one".