85491273 has 32 divisors (see below), whose sum is σ = 137797632. Its totient is φ = 46108800.

The previous prime is 85491269. The next prime is 85491277. The reversal of 85491273 is 37219458.

It is an interprime number because it is at equal distance from previous prime (85491269) and next prime (85491277).

It is not a de Polignac number, because 85491273 - 2² = 85491269 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (85491277) 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 31 ways as a sum of consecutive naturals, for example, 25090 + ... + 28292.

It is an arithmetic number, because the mean of its divisors is an integer number (4306176).

Almost surely, 2^85491273 is an apocalyptic number.

It is an amenable number.

85491273 is a deficient number, since it is larger than the sum of its proper divisors (52306359).

85491273 is a wasteful number, since it uses less digits than its factorization.

85491273 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3285.

The product of its digits is 60480, while the sum is 39.

The square root of 85491273 is about 9246.1490902970. The cubic root of 85491273 is about 440.5284164546.

The spelling of 85491273 in words is "eighty-five million, four hundred ninety-one thousand, two hundred seventy-three".