215063273 has 2 divisors, whose sum is σ = 215063274. Its totient is φ = 215063272.

The previous prime is 215063257. The next prime is 215063281. The reversal of 215063273 is 372360512.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 206554384 + 8508889 = 14372^2 + 2917^2 .

It is a cyclic number.

It is not a de Polignac number, because 215063273 - 2⁴ = 215063257 is a prime.

It is a super-2 number, since 2×215063273² = 92504422786945058, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (215063773) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107531636 + 107531637.

It is an arithmetic number, because the mean of its divisors is an integer number (107531637).

Almost surely, 2^215063273 is an apocalyptic number.

It is an amenable number.

215063273 is a deficient number, since it is larger than the sum of its proper divisors (1).

215063273 is an equidigital number, since it uses as much as digits as its factorization.

215063273 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7560, while the sum is 29.

The square root of 215063273 is about 14665.0357312896. The cubic root of 215063273 is about 599.1314033584.

The spelling of 215063273 in words is "two hundred fifteen million, sixty-three thousand, two hundred seventy-three".