215352229 has 2 divisors, whose sum is σ = 215352230. Its totient is φ = 215352228.

The previous prime is 215352199. The next prime is 215352307. The reversal of 215352229 is 922253512.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 131629729 + 83722500 = 11473^2 + 9150^2 .

It is a cyclic number.

It is not a de Polignac number, because 215352229 - 2¹¹ = 215350181 is a prime.

It is equal to p_11880724 and since 215352229 and 11880724 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 215352229.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (215352329) 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, 107676114 + 107676115.

It is an arithmetic number, because the mean of its divisors is an integer number (107676115).

Almost surely, 2^215352229 is an apocalyptic number.

It is an amenable number.

215352229 is a deficient number, since it is larger than the sum of its proper divisors (1).

215352229 is an equidigital number, since it uses as much as digits as its factorization.

215352229 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10800, while the sum is 31.

The square root of 215352229 is about 14674.8842925592. The cubic root of 215352229 is about 599.3996114601.

The spelling of 215352229 in words is "two hundred fifteen million, three hundred fifty-two thousand, two hundred twenty-nine".