52129765 has 8 divisors (see below), whose sum is σ = 62654328. Its totient is φ = 41638080.

The previous prime is 52129751. The next prime is 52129771. The reversal of 52129765 is 56792125.

It can be written as a sum of positive squares in 4 ways, for example, as 12967201 + 39162564 = 3601^2 + 6258^2 .

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

It is not a de Polignac number, because 52129765 - 2¹¹ = 52127717 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 7 ways as a sum of consecutive naturals, for example, 4582 + ... + 11191.

It is an arithmetic number, because the mean of its divisors is an integer number (7831791).

Almost surely, 2^52129765 is an apocalyptic number.

It is an amenable number.

52129765 is a deficient number, since it is larger than the sum of its proper divisors (10524563).

52129765 is a wasteful number, since it uses less digits than its factorization.

52129765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16439.

The product of its digits is 37800, while the sum is 37.

The square root of 52129765 is about 7220.0945284671. The cubic root of 52129765 is about 373.5613381004.

The spelling of 52129765 in words is "fifty-two million, one hundred twenty-nine thousand, seven hundred sixty-five".