50857997 has 2 divisors, whose sum is σ = 50857998. Its totient is φ = 50857996.

The previous prime is 50857993. The next prime is 50858029. The reversal of 50857997 is 79975805.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 50608996 + 249001 = 7114^2 + 499^2 .

It is a cyclic number.

It is not a de Polignac number, because 50857997 - 2² = 50857993 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (50857993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25428998 + 25428999.

It is an arithmetic number, because the mean of its divisors is an integer number (25428999).

Almost surely, 2^50857997 is an apocalyptic number.

It is an amenable number.

50857997 is a deficient number, since it is larger than the sum of its proper divisors (1).

50857997 is an equidigital number, since it uses as much as digits as its factorization.

50857997 is an odious number, because the sum of its binary digits is odd.

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

The square root of 50857997 is about 7131.4792995563. The cubic root of 50857997 is about 370.4984686471.

The spelling of 50857997 in words is "fifty million, eight hundred fifty-seven thousand, nine hundred ninety-seven".