85887751 has 2 divisors, whose sum is σ = 85887752. Its totient is φ = 85887750.

The previous prime is 85887731. The next prime is 85887779. The reversal of 85887751 is 15778858.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 85887751 - 2¹⁵ = 85854983 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 85887695 and 85887704.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85887731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42943875 + 42943876.

It is an arithmetic number, because the mean of its divisors is an integer number (42943876).

Almost surely, 2^85887751 is an apocalyptic number.

85887751 is a deficient number, since it is larger than the sum of its proper divisors (1).

85887751 is an equidigital number, since it uses as much as digits as its factorization.

85887751 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 627200, while the sum is 49.

The square root of 85887751 is about 9267.5644589072. The cubic root of 85887751 is about 441.2083709092.

The spelling of 85887751 in words is "eighty-five million, eight hundred eighty-seven thousand, seven hundred fifty-one".