50102821 has 2 divisors, whose sum is σ = 50102822. Its totient is φ = 50102820.

The previous prime is 50102797. The next prime is 50102873. The reversal of 50102821 is 12820105.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 47761921 + 2340900 = 6911^2 + 1530^2 .

It is a cyclic number.

It is not a de Polignac number, because 50102821 - 2⁷ = 50102693 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (50102881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25051410 + 25051411.

It is an arithmetic number, because the mean of its divisors is an integer number (25051411).

Almost surely, 2^50102821 is an apocalyptic number.

It is an amenable number.

50102821 is a deficient number, since it is larger than the sum of its proper divisors (1).

50102821 is an equidigital number, since it uses as much as digits as its factorization.

50102821 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 160, while the sum is 19.

The square root of 50102821 is about 7078.3346205163. The cubic root of 50102821 is about 368.6555074937.

Adding to 50102821 its reverse (12820105), we get a palindrome (62922926).

The spelling of 50102821 in words is "fifty million, one hundred two thousand, eight hundred twenty-one".