85131051 has 16 divisors (see below), whose sum is σ = 116078880. Its totient is φ = 55480320.

The previous prime is 85131029. The next prime is 85131061. The reversal of 85131051 is 15013158.

It is not a de Polignac number, because 85131051 - 2¹⁷ = 84999979 is a prime.

It is not an unprimeable number, because it can be changed into a prime (85131061) 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, 30315 + ... + 33003.

It is an arithmetic number, because the mean of its divisors is an integer number (7254930).

Almost surely, 2^85131051 is an apocalyptic number.

85131051 is a deficient number, since it is larger than the sum of its proper divisors (30947829).

85131051 is a wasteful number, since it uses less digits than its factorization.

85131051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2926.

The product of its (nonzero) digits is 600, while the sum is 24.

The square root of 85131051 is about 9226.6489583163. The cubic root of 85131051 is about 439.9088154708.

The spelling of 85131051 in words is "eighty-five million, one hundred thirty-one thousand, fifty-one".