85151 has 4 divisors (see below), whose sum is σ = 92904. Its totient is φ = 77400.

The previous prime is 85147. The next prime is 85159. The reversal of 85151 is 15158.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 85151 - 2² = 85147 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 85151.

It is not an unprimeable number, because it can be changed into a prime (85159) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3860 + ... + 3881.

It is an arithmetic number, because the mean of its divisors is an integer number (23226).

2⁸⁵¹⁵¹ is an apocalyptic number.

85151 is the 131-st centered decagonal number.

85151 is a deficient number, since it is larger than the sum of its proper divisors (7753).

85151 is a wasteful number, since it uses less digits than its factorization.

85151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7752.

The product of its digits is 200, while the sum is 20.

The square root of 85151 is about 291.8064426979. The cubic root of 85151 is about 43.9943174480.

The spelling of 85151 in words is "eighty-five thousand, one hundred fifty-one".