52085665 has 8 divisors (see below), whose sum is σ = 62610408. Its totient is φ = 41596800.

The previous prime is 52085659. The next prime is 52085701. The reversal of 52085665 is 56658025.

It can be written as a sum of positive squares in 4 ways, for example, as 2692881 + 49392784 = 1641^2 + 7028^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 52085665 - 2⁵ = 52085633 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5662 + ... + 11671.

It is an arithmetic number, because the mean of its divisors is an integer number (7826301).

Almost surely, 2^52085665 is an apocalyptic number.

It is an amenable number.

52085665 is a deficient number, since it is larger than the sum of its proper divisors (10524743).

52085665 is a wasteful number, since it uses less digits than its factorization.

52085665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17939.

The product of its (nonzero) digits is 72000, while the sum is 37.

The square root of 52085665 is about 7217.0399056677. The cubic root of 52085665 is about 373.4559683390.

The spelling of 52085665 in words is "fifty-two million, eighty-five thousand, six hundred sixty-five".