85317555 has 8 divisors (see below), whose sum is σ = 136508112. Its totient is φ = 45502688.

The previous prime is 85317553. The next prime is 85317559. The reversal of 85317555 is 55571358.

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 85317555 - 2¹ = 85317553 is a prime.

It is a nialpdrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (85317553) 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, 2843904 + ... + 2843933.

It is an arithmetic number, because the mean of its divisors is an integer number (17063514).

Almost surely, 2^85317555 is an apocalyptic number.

85317555 is a deficient number, since it is larger than the sum of its proper divisors (51190557).

85317555 is a wasteful number, since it uses less digits than its factorization.

85317555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5687845.

The product of its digits is 105000, while the sum is 39.

The square root of 85317555 is about 9236.7502402089. The cubic root of 85317555 is about 440.2298299984.

The spelling of 85317555 in words is "eighty-five million, three hundred seventeen thousand, five hundred fifty-five".