85151517 has 16 divisors (see below), whose sum is σ = 124101120. Its totient is φ = 51505200.

The previous prime is 85151509. The next prime is 85151519. The reversal of 85151517 is 71515158.

It is not a de Polignac number, because 85151517 - 2³ = 85151509 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85151519) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16584 + ... + 21102.

It is an arithmetic number, because the mean of its divisors is an integer number (7756320).

Almost surely, 2^85151517 is an apocalyptic number.

It is an amenable number.

85151517 is a deficient number, since it is larger than the sum of its proper divisors (38949603).

85151517 is a wasteful number, since it uses less digits than its factorization.

85151517 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5104.

The product of its digits is 7000, while the sum is 33.

The square root of 85151517 is about 9227.7579617153. The cubic root of 85151517 is about 439.9440648592.

It can be divided in two parts, 8515151 and 7, that added together give a palindrome (8515158).

The spelling of 85151517 in words is "eighty-five million, one hundred fifty-one thousand, five hundred seventeen".