50686249 has 2 divisors, whose sum is σ = 50686250. Its totient is φ = 50686248.

The previous prime is 50686241. The next prime is 50686253. The reversal of 50686249 is 94268605.

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., 46512400 + 4173849 = 6820^2 + 2043^2 .

It is a cyclic number.

It is not a de Polignac number, because 50686249 - 2³ = 50686241 is a prime.

It is not a weakly prime, because it can be changed into another prime (50686241) 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, 25343124 + 25343125.

It is an arithmetic number, because the mean of its divisors is an integer number (25343125).

Almost surely, 2^50686249 is an apocalyptic number.

It is an amenable number.

50686249 is a deficient number, since it is larger than the sum of its proper divisors (1).

50686249 is an equidigital number, since it uses as much as digits as its factorization.

50686249 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 103680, while the sum is 40.

The square root of 50686249 is about 7119.4275753041. The cubic root of 50686249 is about 370.0809391957.

The spelling of 50686249 in words is "fifty million, six hundred eighty-six thousand, two hundred forty-nine".