51886789 has 2 divisors, whose sum is σ = 51886790. Its totient is φ = 51886788.

The previous prime is 51886787. The next prime is 51886811. The reversal of 51886789 is 98768815.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 27384289 + 24502500 = 5233^2 + 4950^2 .

It is a cyclic number.

It is not a de Polignac number, because 51886789 - 2¹ = 51886787 is a prime.

Together with 51886787, 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 (51886787) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25943394 + 25943395.

It is an arithmetic number, because the mean of its divisors is an integer number (25943395).

Almost surely, 2^51886789 is an apocalyptic number.

It is an amenable number.

51886789 is a deficient number, since it is larger than the sum of its proper divisors (1).

51886789 is an equidigital number, since it uses as much as digits as its factorization.

51886789 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 967680, while the sum is 52.

The square root of 51886789 is about 7203.2485032796. The cubic root of 51886789 is about 372.9800462268.

The spelling of 51886789 in words is "fifty-one million, eight hundred eighty-six thousand, seven hundred eighty-nine".