50390257 has 2 divisors, whose sum is σ = 50390258. Its totient is φ = 50390256.

The previous prime is 50390233. The next prime is 50390267. The reversal of 50390257 is 75209305.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 43546801 + 6843456 = 6599^2 + 2616^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-50390257 is a prime.

It is not a weakly prime, because it can be changed into another prime (50390267) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25195128 + 25195129.

It is an arithmetic number, because the mean of its divisors is an integer number (25195129).

Almost surely, 2^50390257 is an apocalyptic number.

It is an amenable number.

50390257 is a deficient number, since it is larger than the sum of its proper divisors (1).

50390257 is an equidigital number, since it uses as much as digits as its factorization.

50390257 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9450, while the sum is 31.

The square root of 50390257 is about 7098.6095117283. The cubic root of 50390257 is about 369.3591463196.

The spelling of 50390257 in words is "fifty million, three hundred ninety thousand, two hundred fifty-seven".