52217131 has 2 divisors, whose sum is σ = 52217132. Its totient is φ = 52217130.

The previous prime is 52217129. The next prime is 52217147. The reversal of 52217131 is 13171225.

It is a happy number.

52217131 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 52217131 - 2¹ = 52217129 is a prime.

It is a super-2 number, since 2×52217131² = 5453257539742322, which contains 22 as substring.

Together with 52217129, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (52217171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26108565 + 26108566.

It is an arithmetic number, because the mean of its divisors is an integer number (26108566).

Almost surely, 2^52217131 is an apocalyptic number.

52217131 is a deficient number, since it is larger than the sum of its proper divisors (1).

52217131 is an equidigital number, since it uses as much as digits as its factorization.

52217131 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 420, while the sum is 22.

The square root of 52217131 is about 7226.1421934529. The cubic root of 52217131 is about 373.7699095668.

Adding to 52217131 its reverse (13171225), we get a palindrome (65388356).

The spelling of 52217131 in words is "fifty-two million, two hundred seventeen thousand, one hundred thirty-one".