85321491 has 8 divisors (see below), whose sum is σ = 114935184. Its totient is φ = 56294400.

The previous prime is 85321463. The next prime is 85321499. The reversal of 85321491 is 19412358.

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

It is not a de Polignac number, because 85321491 - 2⁵ = 85321459 is a prime.

It is not an unprimeable number, because it can be changed into a prime (85321499) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 146310 + ... + 146891.

It is an arithmetic number, because the mean of its divisors is an integer number (14366898).

Almost surely, 2^85321491 is an apocalyptic number.

85321491 is a deficient number, since it is larger than the sum of its proper divisors (29613693).

85321491 is a wasteful number, since it uses less digits than its factorization.

85321491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 293301.

The product of its digits is 8640, while the sum is 33.

The square root of 85321491 is about 9236.9632996997. The cubic root of 85321491 is about 440.2365996796.

The spelling of 85321491 in words is "eighty-five million, three hundred twenty-one thousand, four hundred ninety-one".