52161791 has 8 divisors (see below), whose sum is σ = 57320784. Its totient is φ = 47072320.

The previous prime is 52161779. The next prime is 52161829. The reversal of 52161791 is 19716125.

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

It is a cyclic number.

It is not a de Polignac number, because 52161791 - 2⁶ = 52161727 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52161701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15800 + ... + 18813.

It is an arithmetic number, because the mean of its divisors is an integer number (7165098).

Almost surely, 2^52161791 is an apocalyptic number.

52161791 is a deficient number, since it is larger than the sum of its proper divisors (5158993).

52161791 is a wasteful number, since it uses less digits than its factorization.

52161791 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34761.

The product of its digits is 3780, while the sum is 32.

The square root of 52161791 is about 7222.3120259374. The cubic root of 52161791 is about 373.6378217643.

It can be divided in two parts, 5216 and 1791, that added together give a palindrome (7007).

The spelling of 52161791 in words is "fifty-two million, one hundred sixty-one thousand, seven hundred ninety-one".