215568097 has 2 divisors, whose sum is σ = 215568098. Its totient is φ = 215568096.

The previous prime is 215568061. The next prime is 215568113. The reversal of 215568097 is 790865512.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 118722816 + 96845281 = 10896^2 + 9841^2 .

It is a cyclic number.

It is not a de Polignac number, because 215568097 - 2⁷ = 215567969 is a prime.

It is not a weakly prime, because it can be changed into another prime (215560097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107784048 + 107784049.

It is an arithmetic number, because the mean of its divisors is an integer number (107784049).

Almost surely, 2^215568097 is an apocalyptic number.

It is an amenable number.

215568097 is a deficient number, since it is larger than the sum of its proper divisors (1).

215568097 is an equidigital number, since it uses as much as digits as its factorization.

215568097 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 151200, while the sum is 43.

The square root of 215568097 is about 14682.2374657271. The cubic root of 215568097 is about 599.5998229714.

The spelling of 215568097 in words is "two hundred fifteen million, five hundred sixty-eight thousand, ninety-seven".