85152129 has 16 divisors (see below), whose sum is σ = 120751680. Its totient is φ = 53222400.

The previous prime is 85152127. The next prime is 85152143. The reversal of 85152129 is 92125158.

It is not a de Polignac number, because 85152129 - 2¹ = 85152127 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 85152129.

It is not an unprimeable number, because it can be changed into a prime (85152127) 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, 2172 + ... + 13229.

It is an arithmetic number, because the mean of its divisors is an integer number (7546980).

Almost surely, 2^85152129 is an apocalyptic number.

It is an amenable number.

85152129 is a deficient number, since it is larger than the sum of its proper divisors (35599551).

85152129 is a wasteful number, since it uses less digits than its factorization.

85152129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15520.

The product of its digits is 7200, while the sum is 33.

The square root of 85152129 is about 9227.7911224735. The cubic root of 85152129 is about 439.9451188437.

The spelling of 85152129 in words is "eighty-five million, one hundred fifty-two thousand, one hundred twenty-nine".