52111985 has 16 divisors (see below), whose sum is σ = 65921040. Its totient is φ = 39486720.

The previous prime is 52111981. The next prime is 52111991. The reversal of 52111985 is 58911125.

52111985 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 26896 + 52085089 = 164^2 + 7217^2 .

It is not a de Polignac number, because 52111985 - 2² = 52111981 is a prime.

It is not an unprimeable number, because it can be changed into a prime (52111981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4295 + ... + 11075.

It is an arithmetic number, because the mean of its divisors is an integer number (4120065).

Almost surely, 2^52111985 is an apocalyptic number.

It is an amenable number.

52111985 is a deficient number, since it is larger than the sum of its proper divisors (13809055).

52111985 is a wasteful number, since it uses less digits than its factorization.

52111985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6868.

The product of its digits is 3600, while the sum is 32.

The square root of 52111985 is about 7218.8631376415. The cubic root of 52111985 is about 373.5188628411.

The spelling of 52111985 in words is "fifty-two million, one hundred eleven thousand, nine hundred eighty-five".