50929821 has 6 divisors (see below), whose sum is σ = 73565310. Its totient is φ = 33953208.

The previous prime is 50929789. The next prime is 50929867. The reversal of 50929821 is 12892905.

It can be written as a sum of positive squares in only one way, i.e., 32319225 + 18610596 = 5685^2 + 4314^2 .

It is not a de Polignac number, because 50929821 - 2⁵ = 50929789 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50929321) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2829426 + ... + 2829443.

It is an arithmetic number, because the mean of its divisors is an integer number (12260885).

Almost surely, 2^50929821 is an apocalyptic number.

It is an amenable number.

50929821 is a deficient number, since it is larger than the sum of its proper divisors (22635489).

50929821 is a wasteful number, since it uses less digits than its factorization.

50929821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5658875 (or 5658872 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 36.

The square root of 50929821 is about 7136.5132242573. The cubic root of 50929821 is about 370.6727982606.

The spelling of 50929821 in words is "fifty million, nine hundred twenty-nine thousand, eight hundred twenty-one".