85824121 has 8 divisors (see below), whose sum is σ = 90504000. Its totient is φ = 81160560.

The previous prime is 85824113. The next prime is 85824157. The reversal of 85824121 is 12142858.

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

It is a cyclic number.

It is not a de Polignac number, because 85824121 - 2³ = 85824113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85824191) 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, 7611 + ... + 15151.

It is an arithmetic number, because the mean of its divisors is an integer number (11313000).

Almost surely, 2^85824121 is an apocalyptic number.

It is an amenable number.

85824121 is a deficient number, since it is larger than the sum of its proper divisors (4679879).

85824121 is a wasteful number, since it uses less digits than its factorization.

85824121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8159.

The product of its digits is 5120, while the sum is 31.

The square root of 85824121 is about 9264.1308820634. The cubic root of 85824121 is about 441.0993874819.

Adding to 85824121 its reverse (12142858), we get a palindrome (97966979).

The spelling of 85824121 in words is "eighty-five million, eight hundred twenty-four thousand, one hundred twenty-one".