215045573 has 2 divisors, whose sum is σ = 215045574. Its totient is φ = 215045572.

The previous prime is 215045513. The next prime is 215045587. The reversal of 215045573 is 375540512.

215045573 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 210627169 + 4418404 = 14513^2 + 2102^2 .

It is a cyclic number.

It is not a de Polignac number, because 215045573 - 2¹⁴ = 215029189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (215045513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107522786 + 107522787.

It is an arithmetic number, because the mean of its divisors is an integer number (107522787).

Almost surely, 2^215045573 is an apocalyptic number.

It is an amenable number.

215045573 is a deficient number, since it is larger than the sum of its proper divisors (1).

215045573 is an equidigital number, since it uses as much as digits as its factorization.

215045573 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21000, while the sum is 32.

The square root of 215045573 is about 14664.4322426748. The cubic root of 215045573 is about 599.1149664642.

The spelling of 215045573 in words is "two hundred fifteen million, forty-five thousand, five hundred seventy-three".