52157165 has 4 divisors (see below), whose sum is σ = 62588604. Its totient is φ = 41725728.

The previous prime is 52157137. The next prime is 52157177. The reversal of 52157165 is 56175125.

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 40309801 + 11847364 = 6349^2 + 3442^2 .

It is a cyclic number.

It is not a de Polignac number, because 52157165 - 2⁶ = 52157101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5215712 + ... + 5215721.

It is an arithmetic number, because the mean of its divisors is an integer number (15647151).

Almost surely, 2^52157165 is an apocalyptic number.

It is an amenable number.

52157165 is a deficient number, since it is larger than the sum of its proper divisors (10431439).

52157165 is a wasteful number, since it uses less digits than its factorization.

52157165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10431438.

The product of its digits is 10500, while the sum is 32.

The square root of 52157165 is about 7221.9917612803. The cubic root of 52157165 is about 373.6267760057.

The spelling of 52157165 in words is "fifty-two million, one hundred fifty-seven thousand, one hundred sixty-five".