85082121 has 6 divisors (see below), whose sum is σ = 122896410. Its totient is φ = 56721408.

The previous prime is 85082117. The next prime is 85082149. The reversal of 85082121 is 12128058.

It can be written as a sum of positive squares in only one way, i.e., 75064896 + 10017225 = 8664^2 + 3165^2 .

It is not a de Polignac number, because 85082121 - 2² = 85082117 is a prime.

It is not an unprimeable number, because it can be changed into a prime (85081121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4726776 + ... + 4726793.

It is an arithmetic number, because the mean of its divisors is an integer number (20482735).

Almost surely, 2^85082121 is an apocalyptic number.

It is an amenable number.

85082121 is a deficient number, since it is larger than the sum of its proper divisors (37814289).

85082121 is a wasteful number, since it uses less digits than its factorization.

85082121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9453575 (or 9453572 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 27.

The square root of 85082121 is about 9223.9970186465. The cubic root of 85082121 is about 439.8245185221.

The spelling of 85082121 in words is "eighty-five million, eighty-two thousand, one hundred twenty-one".