52661165 has 4 divisors (see below), whose sum is σ = 63193404. Its totient is φ = 42128928.

The previous prime is 52661159. The next prime is 52661207. The reversal of 52661165 is 56116625.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 24581764 + 28079401 = 4958^2 + 5299^2 .

It is a cyclic number.

It is not a de Polignac number, because 52661165 - 2⁴ = 52661149 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5266112 + ... + 5266121.

It is an arithmetic number, because the mean of its divisors is an integer number (15798351).

Almost surely, 2^52661165 is an apocalyptic number.

It is an amenable number.

52661165 is a deficient number, since it is larger than the sum of its proper divisors (10532239).

52661165 is a wasteful number, since it uses less digits than its factorization.

52661165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10532238.

The product of its digits is 10800, while the sum is 32.

The square root of 52661165 is about 7256.8012925806. The cubic root of 52661165 is about 374.8263848183.

The spelling of 52661165 in words is "fifty-two million, six hundred sixty-one thousand, one hundred sixty-five".