50997857 has 2 divisors, whose sum is σ = 50997858. Its totient is φ = 50997856.

The previous prime is 50997853. The next prime is 50997901. The reversal of 50997857 is 75879905.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 46840336 + 4157521 = 6844^2 + 2039^2 .

It is a cyclic number.

It is not a de Polignac number, because 50997857 - 2² = 50997853 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (50997853) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25498928 + 25498929.

It is an arithmetic number, because the mean of its divisors is an integer number (25498929).

Almost surely, 2^50997857 is an apocalyptic number.

It is an amenable number.

50997857 is a deficient number, since it is larger than the sum of its proper divisors (1).

50997857 is an equidigital number, since it uses as much as digits as its factorization.

50997857 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 793800, while the sum is 50.

The square root of 50997857 is about 7141.2783869557. The cubic root of 50997857 is about 370.8377826284.

The spelling of 50997857 in words is "fifty million, nine hundred ninety-seven thousand, eight hundred fifty-seven".