50864987 has 2 divisors, whose sum is σ = 50864988. Its totient is φ = 50864986.

The previous prime is 50864977. The next prime is 50864999. The reversal of 50864987 is 78946805.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 50864987 - 2⁴ = 50864971 is a prime.

It is not a weakly prime, because it can be changed into another prime (50864917) 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, 25432493 + 25432494.

It is an arithmetic number, because the mean of its divisors is an integer number (25432494).

Almost surely, 2^50864987 is an apocalyptic number.

50864987 is a deficient number, since it is larger than the sum of its proper divisors (1).

50864987 is an equidigital number, since it uses as much as digits as its factorization.

50864987 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 483840, while the sum is 47.

The square root of 50864987 is about 7131.9693633666. The cubic root of 50864987 is about 370.5154418260.

The spelling of 50864987 in words is "fifty million, eight hundred sixty-four thousand, nine hundred eighty-seven".