52071985 has 16 divisors (see below), whose sum is σ = 71596800. Its totient is φ = 35614656.

The previous prime is 52071967. The next prime is 52072001. The reversal of 52071985 is 58917025.

It is not a de Polignac number, because 52071985 - 2⁵ = 52071953 is a prime.

It is a super-2 number, since 2×52071985² = 5422983243680450, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13671 + ... + 17059.

It is an arithmetic number, because the mean of its divisors is an integer number (4474800).

Almost surely, 2^52071985 is an apocalyptic number.

It is an amenable number.

52071985 is a deficient number, since it is larger than the sum of its proper divisors (19524815).

52071985 is a wasteful number, since it uses less digits than its factorization.

52071985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3840.

The product of its (nonzero) digits is 25200, while the sum is 37.

The square root of 52071985 is about 7216.0920864412. The cubic root of 52071985 is about 373.4232701230.

The spelling of 52071985 in words is "fifty-two million, seventy-one thousand, nine hundred eighty-five".