85319001 has 24 divisors (see below), whose sum is σ = 128244480. Its totient is φ = 56683152.

The previous prime is 85318997. The next prime is 85319011. The reversal of 85319001 is 10091358.

It is not a de Polignac number, because 85319001 - 2² = 85318997 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (85319011) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 116031 + ... + 116763.

It is an arithmetic number, because the mean of its divisors is an integer number (5343520).

Almost surely, 2^85319001 is an apocalyptic number.

85319001 is a gapful number since it is divisible by the number (81) formed by its first and last digit.

It is an amenable number.

85319001 is a deficient number, since it is larger than the sum of its proper divisors (42925479).

85319001 is an equidigital number, since it uses as much as digits as its factorization.

85319001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1227 (or 1215 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 27.

The square root of 85319001 is about 9236.8285141600. The cubic root of 85319001 is about 440.2323170549.

The spelling of 85319001 in words is "eighty-five million, three hundred nineteen thousand, one".