50071997 has 2 divisors, whose sum is σ = 50071998. Its totient is φ = 50071996.

The previous prime is 50071979. The next prime is 50072027. The reversal of 50071997 is 79917005.

Together with previous prime (50071979) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 49928356 + 143641 = 7066^2 + 379^2 .

It is a cyclic number.

It is not a de Polignac number, because 50071997 - 2⁸ = 50071741 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 50071997.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (50071907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25035998 + 25035999.

It is an arithmetic number, because the mean of its divisors is an integer number (25035999).

Almost surely, 2^50071997 is an apocalyptic number.

It is an amenable number.

50071997 is a deficient number, since it is larger than the sum of its proper divisors (1).

50071997 is an equidigital number, since it uses as much as digits as its factorization.

50071997 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 19845, while the sum is 38.

The square root of 50071997 is about 7076.1569372082. The cubic root of 50071997 is about 368.5798912027.

The spelling of 50071997 in words is "fifty million, seventy-one thousand, nine hundred ninety-seven".