215042353 has 2 divisors, whose sum is σ = 215042354. Its totient is φ = 215042352.

The previous prime is 215042351. The next prime is 215042363. The reversal of 215042353 is 353240512.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 200165904 + 14876449 = 14148^2 + 3857^2 .

It is a cyclic number.

It is not a de Polignac number, because 215042353 - 2¹ = 215042351 is a prime.

Together with 215042351, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (215042351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107521176 + 107521177.

It is an arithmetic number, because the mean of its divisors is an integer number (107521177).

Almost surely, 2^215042353 is an apocalyptic number.

It is an amenable number.

215042353 is a deficient number, since it is larger than the sum of its proper divisors (1).

215042353 is an equidigital number, since it uses as much as digits as its factorization.

215042353 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3600, while the sum is 25.

The square root of 215042353 is about 14664.3224528104. The cubic root of 215042353 is about 599.1119761526. Note that the first 3 decimals are identical.

Adding to 215042353 its reverse (353240512), we get a palindrome (568282865).

The spelling of 215042353 in words is "two hundred fifteen million, forty-two thousand, three hundred fifty-three".