52161211 has 4 divisors (see below), whose sum is σ = 53271072. Its totient is φ = 51051352.

The previous prime is 52161203. The next prime is 52161233. The reversal of 52161211 is 11216125.

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

It is a cyclic number.

It is not a de Polignac number, because 52161211 - 2³ = 52161203 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52161271) by changing a digit.

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, 554860 + ... + 554953.

It is an arithmetic number, because the mean of its divisors is an integer number (13317768).

Almost surely, 2^52161211 is an apocalyptic number.

52161211 is a deficient number, since it is larger than the sum of its proper divisors (1109861).

52161211 is a wasteful number, since it uses less digits than its factorization.

52161211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1109860.

The product of its digits is 120, while the sum is 19.

The square root of 52161211 is about 7222.2718724789. The cubic root of 52161211 is about 373.6364369017.

Adding to 52161211 its reverse (11216125), we get a palindrome (63377336).

The spelling of 52161211 in words is "fifty-two million, one hundred sixty-one thousand, two hundred eleven".