50349821 has 2 divisors, whose sum is σ = 50349822. Its totient is φ = 50349820.

The previous prime is 50349811. The next prime is 50349823. The reversal of 50349821 is 12894305.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 46389721 + 3960100 = 6811^2 + 1990^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-50349821 is a prime.

Together with 50349823, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (50349823) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25174910 + 25174911.

It is an arithmetic number, because the mean of its divisors is an integer number (25174911).

Almost surely, 2^50349821 is an apocalyptic number.

It is an amenable number.

50349821 is a deficient number, since it is larger than the sum of its proper divisors (1).

50349821 is an equidigital number, since it uses as much as digits as its factorization.

50349821 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 50349821 is about 7095.7607766891. The cubic root of 50349821 is about 369.2603216386.

The spelling of 50349821 in words is "fifty million, three hundred forty-nine thousand, eight hundred twenty-one".