85871503 has 2 divisors, whose sum is σ = 85871504. Its totient is φ = 85871502.

The previous prime is 85871483. The next prime is 85871521. The reversal of 85871503 is 30517858.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-85871503 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85871543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42935751 + 42935752.

It is an arithmetic number, because the mean of its divisors is an integer number (42935752).

Almost surely, 2^85871503 is an apocalyptic number.

85871503 is a deficient number, since it is larger than the sum of its proper divisors (1).

85871503 is an equidigital number, since it uses as much as digits as its factorization.

85871503 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 33600, while the sum is 37.

The square root of 85871503 is about 9266.6878117265. The cubic root of 85871503 is about 441.1805469738.

It can be divided in two parts, 858 and 71503, that added together give a square (72361 = 269²).

The spelling of 85871503 in words is "eighty-five million, eight hundred seventy-one thousand, five hundred three".