85381121 has 8 divisors (see below), whose sum is σ = 98953344. Its totient is φ = 72152640.

The previous prime is 85381111. The next prime is 85381159. The reversal of 85381121 is 12118358.

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

It is a de Polignac number, because none of the positive numbers 2^k-85381121 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (85381111) 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, 85400 + ... + 86393.

It is an arithmetic number, because the mean of its divisors is an integer number (12369168).

Almost surely, 2^85381121 is an apocalyptic number.

It is an amenable number.

85381121 is a deficient number, since it is larger than the sum of its proper divisors (13572223).

85381121 is a wasteful number, since it uses less digits than its factorization.

85381121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171871.

The product of its digits is 1920, while the sum is 29.

The square root of 85381121 is about 9240.1905283387. The cubic root of 85381121 is about 440.3391342031.

Adding to 85381121 its reverse (12118358), we get a palindrome (97499479).

The spelling of 85381121 in words is "eighty-five million, three hundred eighty-one thousand, one hundred twenty-one".