85052129 has 4 divisors (see below), whose sum is σ = 85297584. Its totient is φ = 84806676.

The previous prime is 85052119. The next prime is 85052131. The reversal of 85052129 is 92125058.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-85052129 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 85052095 and 85052104.

It is not an unprimeable number, because it can be changed into a prime (85052119) 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, 122207 + ... + 122900.

It is an arithmetic number, because the mean of its divisors is an integer number (21324396).

Almost surely, 2^85052129 is an apocalyptic number.

It is an amenable number.

85052129 is a deficient number, since it is larger than the sum of its proper divisors (245455).

85052129 is a wasteful number, since it uses less digits than its factorization.

85052129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 245454.

The product of its (nonzero) digits is 7200, while the sum is 32.

The square root of 85052129 is about 9222.3711159333. The cubic root of 85052129 is about 439.7728321157.

The spelling of 85052129 in words is "eighty-five million, fifty-two thousand, one hundred twenty-nine".