50291894021 has 2 divisors, whose sum is σ = 50291894022. Its totient is φ = 50291894020.

The previous prime is 50291894011. The next prime is 50291894039. The reversal of 50291894021 is 12049819205.

50291894021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 50225292100 + 66601921 = 224110^2 + 8161^2 .

It is a cyclic number.

It is not a de Polignac number, because 50291894021 - 2¹⁰ = 50291892997 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 50291894021.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (50291894011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25145947010 + 25145947011.

It is an arithmetic number, because the mean of its divisors is an integer number (25145947011).

Almost surely, 2^50291894021 is an apocalyptic number.

It is an amenable number.

50291894021 is a deficient number, since it is larger than the sum of its proper divisors (1).

50291894021 is an equidigital number, since it uses as much as digits as its factorization.

50291894021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 51840, while the sum is 41.

The spelling of 50291894021 in words is "fifty billion, two hundred ninety-one million, eight hundred ninety-four thousand, twenty-one".