50216591 has 2 divisors, whose sum is σ = 50216592. Its totient is φ = 50216590.

The previous prime is 50216557. The next prime is 50216597. The reversal of 50216591 is 19561205.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-50216591 is a prime.

It is a super-2 number, since 2×50216591² = 5043412023322562, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (50216597) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25108295 + 25108296.

It is an arithmetic number, because the mean of its divisors is an integer number (25108296).

Almost surely, 2^50216591 is an apocalyptic number.

50216591 is a deficient number, since it is larger than the sum of its proper divisors (1).

50216591 is an equidigital number, since it uses as much as digits as its factorization.

50216591 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2700, while the sum is 29.

The square root of 50216591 is about 7086.3665583993. The cubic root of 50216591 is about 368.9343356446.

Adding to 50216591 its reverse (19561205), we get a palindrome (69777796).

The spelling of 50216591 in words is "fifty million, two hundred sixteen thousand, five hundred ninety-one".