85102117 has 4 divisors (see below), whose sum is σ = 87081280. Its totient is φ = 83122956.

The previous prime is 85102103. The next prime is 85102123. The reversal of 85102117 is 71120158.

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 not a de Polignac number, because 85102117 - 2¹⁵ = 85069349 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 85102091 and 85102100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85106117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 989517 + ... + 989602.

It is an arithmetic number, because the mean of its divisors is an integer number (21770320).

Almost surely, 2^85102117 is an apocalyptic number.

It is an amenable number.

85102117 is a deficient number, since it is larger than the sum of its proper divisors (1979163).

85102117 is a wasteful number, since it uses less digits than its factorization.

85102117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1979162.

The product of its (nonzero) digits is 560, while the sum is 25.

The square root of 85102117 is about 9225.0808668542. The cubic root of 85102117 is about 439.8589716759.

The spelling of 85102117 in words is "eighty-five million, one hundred two thousand, one hundred seventeen".