85098121 has 4 divisors (see below), whose sum is σ = 85421952. Its totient is φ = 84774292.

The previous prime is 85098077. The next prime is 85098173. The reversal of 85098121 is 12189058.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 85098121 - 2⁹ = 85097609 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85098191) 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 3 ways as a sum of consecutive naturals, for example, 161521 + ... + 162046.

It is an arithmetic number, because the mean of its divisors is an integer number (21355488).

Almost surely, 2^85098121 is an apocalyptic number.

It is an amenable number.

85098121 is a deficient number, since it is larger than the sum of its proper divisors (323831).

85098121 is a wasteful number, since it uses less digits than its factorization.

85098121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 323830.

The product of its (nonzero) digits is 5760, while the sum is 34.

The square root of 85098121 is about 9224.8642808445. The cubic root of 85098121 is about 439.8520869902.

The spelling of 85098121 in words is "eighty-five million, ninety-eight thousand, one hundred twenty-one".