51886999 has 2 divisors, whose sum is σ = 51887000. Its totient is φ = 51886998.

The previous prime is 51886997. The next prime is 51887029. The reversal of 51886999 is 99968815.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51886999 - 2¹ = 51886997 is a prime.

Together with 51886997, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51886997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25943499 + 25943500.

It is an arithmetic number, because the mean of its divisors is an integer number (25943500).

Almost surely, 2^51886999 is an apocalyptic number.

51886999 is a deficient number, since it is larger than the sum of its proper divisors (1).

51886999 is an equidigital number, since it uses as much as digits as its factorization.

51886999 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1399680, while the sum is 55.

The square root of 51886999 is about 7203.2630800214. The cubic root of 51886999 is about 372.9805494102.

The spelling of 51886999 in words is "fifty-one million, eight hundred eighty-six thousand, nine hundred ninety-nine".