215055223 has 2 divisors, whose sum is σ = 215055224. Its totient is φ = 215055222.

The previous prime is 215055187. The next prime is 215055251. The reversal of 215055223 is 322550512.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-215055223 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (215055263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107527611 + 107527612.

It is an arithmetic number, because the mean of its divisors is an integer number (107527612).

Almost surely, 2^215055223 is an apocalyptic number.

215055223 is a deficient number, since it is larger than the sum of its proper divisors (1).

215055223 is an equidigital number, since it uses as much as digits as its factorization.

215055223 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3000, while the sum is 25.

The square root of 215055223 is about 14664.7612663828. The cubic root of 215055223 is about 599.1239279336.

The spelling of 215055223 in words is "two hundred fifteen million, fifty-five thousand, two hundred twenty-three".