52081385 has 16 divisors (see below), whose sum is σ = 65689536. Its totient is φ = 39590208.

The previous prime is 52081363. The next prime is 52081391. The reversal of 52081385 is 58318025.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 52081385 - 2¹⁰ = 52080361 is a prime.

It is a Duffinian number.

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, 4682 + ... + 11228.

It is an arithmetic number, because the mean of its divisors is an integer number (4105596).

Almost surely, 2^52081385 is an apocalyptic number.

It is an amenable number.

52081385 is a deficient number, since it is larger than the sum of its proper divisors (13608151).

52081385 is a wasteful number, since it uses less digits than its factorization.

52081385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6632.

The product of its (nonzero) digits is 9600, while the sum is 32.

The square root of 52081385 is about 7216.7433791150. The cubic root of 52081385 is about 373.4457388109.

The spelling of 52081385 in words is "fifty-two million, eighty-one thousand, three hundred eighty-five".