85517405 has 8 divisors (see below), whose sum is σ = 102671712. Its totient is φ = 68380048.

The previous prime is 85517363. The next prime is 85517417. The reversal of 85517405 is 50471558.

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 85517405 - 2²⁰ = 84468829 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 14042 + ... + 19188.

It is an arithmetic number, because the mean of its divisors is an integer number (12833964).

Almost surely, 2^85517405 is an apocalyptic number.

It is an amenable number.

85517405 is a deficient number, since it is larger than the sum of its proper divisors (17154307).

85517405 is a wasteful number, since it uses less digits than its factorization.

85517405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8475.

The product of its (nonzero) digits is 28000, while the sum is 35.

The square root of 85517405 is about 9247.5621111729. The cubic root of 85517405 is about 440.5732971207.

The spelling of 85517405 in words is "eighty-five million, five hundred seventeen thousand, four hundred five".