85091003 has 4 divisors (see below), whose sum is σ = 85332408. Its totient is φ = 84849600.

The previous prime is 85090969. The next prime is 85091011. The reversal of 85091003 is 30019058.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 85091003 - 2¹⁸ = 84828859 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85091033) 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 in 3 ways as a sum of consecutive naturals, for example, 120173 + ... + 120878.

It is an arithmetic number, because the mean of its divisors is an integer number (21333102).

Almost surely, 2^85091003 is an apocalyptic number.

85091003 is a deficient number, since it is larger than the sum of its proper divisors (241405).

85091003 is a wasteful number, since it uses less digits than its factorization.

85091003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 241404.

The product of its (nonzero) digits is 1080, while the sum is 26.

The square root of 85091003 is about 9224.4784676425. The cubic root of 85091003 is about 439.8398228947.

The spelling of 85091003 in words is "eighty-five million, ninety-one thousand, three".