50820217 has 4 divisors (see below), whose sum is σ = 58080256. Its totient is φ = 43560180.

The previous prime is 50820169. The next prime is 50820223. The reversal of 50820217 is 71202805.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 50820217 - 2¹¹ = 50818169 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 50820191 and 50820200.

It is not an unprimeable number, because it can be changed into a prime (50820247) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3630009 + ... + 3630022.

It is an arithmetic number, because the mean of its divisors is an integer number (14520064).

Almost surely, 2^50820217 is an apocalyptic number.

It is an amenable number.

50820217 is a deficient number, since it is larger than the sum of its proper divisors (7260039).

50820217 is an equidigital number, since it uses as much as digits as its factorization.

50820217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7260038.

The product of its (nonzero) digits is 1120, while the sum is 25.

The square root of 50820217 is about 7128.8299881537. The cubic root of 50820217 is about 370.4067039924.

The spelling of 50820217 in words is "fifty million, eight hundred twenty thousand, two hundred seventeen".