215056253 has 2 divisors, whose sum is σ = 215056254. Its totient is φ = 215056252.

The previous prime is 215056223. The next prime is 215056271. The reversal of 215056253 is 352650512.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 132664324 + 82391929 = 11518^2 + 9077^2 .

It is a cyclic number.

It is not a de Polignac number, because 215056253 - 2¹² = 215052157 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (215056223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107528126 + 107528127.

It is an arithmetic number, because the mean of its divisors is an integer number (107528127).

Almost surely, 2^215056253 is an apocalyptic number.

It is an amenable number.

215056253 is a deficient number, since it is larger than the sum of its proper divisors (1).

215056253 is an equidigital number, since it uses as much as digits as its factorization.

215056253 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9000, while the sum is 29.

The square root of 215056253 is about 14664.7963845394. The cubic root of 215056253 is about 599.1248844270.

The spelling of 215056253 in words is "two hundred fifteen million, fifty-six thousand, two hundred fifty-three".