50857817 has 2 divisors, whose sum is σ = 50857818. Its totient is φ = 50857816.

The previous prime is 50857811. The next prime is 50857831. The reversal of 50857817 is 71875805.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 35772361 + 15085456 = 5981^2 + 3884^2 .

It is a cyclic number.

It is not a de Polignac number, because 50857817 - 2¹⁴ = 50841433 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (50857811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25428908 + 25428909.

It is an arithmetic number, because the mean of its divisors is an integer number (25428909).

Almost surely, 2^50857817 is an apocalyptic number.

It is an amenable number.

50857817 is a deficient number, since it is larger than the sum of its proper divisors (1).

50857817 is an equidigital number, since it uses as much as digits as its factorization.

50857817 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 78400, while the sum is 41.

The square root of 50857817 is about 7131.4666794426. The cubic root of 50857817 is about 370.4980315489.

The spelling of 50857817 in words is "fifty million, eight hundred fifty-seven thousand, eight hundred seventeen".