52216641 has 6 divisors (see below), whose sum is σ = 75424050. Its totient is φ = 34811088.

The previous prime is 52216631. The next prime is 52216649. The reversal of 52216641 is 14661225.

52216641 is a `hidden beast` number, since 5 + 2 + 2 + 16 + 641 = 666.

It can be written as a sum of positive squares in only one way, i.e., 38489616 + 13727025 = 6204^2 + 3705^2 .

It is not a de Polignac number, because 52216641 - 2⁵ = 52216609 is a prime.

It is not an unprimeable number, because it can be changed into a prime (52216649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2900916 + ... + 2900933.

It is an arithmetic number, because the mean of its divisors is an integer number (12570675).

Almost surely, 2^52216641 is an apocalyptic number.

It is an amenable number.

52216641 is a deficient number, since it is larger than the sum of its proper divisors (23207409).

52216641 is a wasteful number, since it uses less digits than its factorization.

52216641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5801855 (or 5801852 counting only the distinct ones).

The product of its digits is 2880, while the sum is 27.

The square root of 52216641 is about 7226.1082886987. The cubic root of 52216641 is about 373.7687404241.

Adding to 52216641 its reverse (14661225), we get a palindrome (66877866).

The spelling of 52216641 in words is "fifty-two million, two hundred sixteen thousand, six hundred forty-one".