217425097 has 2 divisors, whose sum is σ = 217425098. Its totient is φ = 217425096.

The previous prime is 217425079. The next prime is 217425101. The reversal of 217425097 is 790524712.

Together with previous prime (217425079) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 184660921 + 32764176 = 13589^2 + 5724^2 .

It is a cyclic number.

It is not a de Polignac number, because 217425097 - 2¹¹ = 217423049 is a prime.

It is not a weakly prime, because it can be changed into another prime (217425067) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108712548 + 108712549.

It is an arithmetic number, because the mean of its divisors is an integer number (108712549).

Almost surely, 2^217425097 is an apocalyptic number.

It is an amenable number.

217425097 is a deficient number, since it is larger than the sum of its proper divisors (1).

217425097 is an equidigital number, since it uses as much as digits as its factorization.

217425097 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 35280, while the sum is 37.

The square root of 217425097 is about 14745.3415355495. The cubic root of 217425097 is about 601.3166428983.

The spelling of 217425097 in words is "two hundred seventeen million, four hundred twenty-five thousand, ninety-seven".