85499457 has 8 divisors (see below), whose sum is σ = 117676800. Its totient is φ = 55160880.

The previous prime is 85499423. The next prime is 85499461. The reversal of 85499457 is 75499458.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 85499457 - 2¹⁰ = 85498433 is a prime.

It is not an unprimeable number, because it can be changed into a prime (85499467) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 459582 + ... + 459767.

It is an arithmetic number, because the mean of its divisors is an integer number (14709600).

Almost surely, 2^85499457 is an apocalyptic number.

It is an amenable number.

85499457 is a deficient number, since it is larger than the sum of its proper divisors (32177343).

85499457 is a wasteful number, since it uses less digits than its factorization.

85499457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 919383.

The product of its digits is 1814400, while the sum is 51.

The square root of 85499457 is about 9246.5916423296. The cubic root of 85499457 is about 440.5424731312.

Subtracting from 85499457 its reverse (75499458), we obtain a palindrome (9999999).

The spelling of 85499457 in words is "eighty-five million, four hundred ninety-nine thousand, four hundred fifty-seven".