217007051 has 2 divisors, whose sum is σ = 217007052. Its totient is φ = 217007050.

The previous prime is 217006997. The next prime is 217007053. The reversal of 217007051 is 150700712.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 217007051 - 2⁶ = 217006987 is a prime.

Together with 217007053, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (217007053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108503525 + 108503526.

It is an arithmetic number, because the mean of its divisors is an integer number (108503526).

Almost surely, 2^217007051 is an apocalyptic number.

217007051 is a deficient number, since it is larger than the sum of its proper divisors (1).

217007051 is an equidigital number, since it uses as much as digits as its factorization.

217007051 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 490, while the sum is 23.

The square root of 217007051 is about 14731.1591872466. The cubic root of 217007051 is about 600.9310092520.

Adding to 217007051 its reverse (150700712), we get a palindrome (367707763).

The spelling of 217007051 in words is "two hundred seventeen million, seven thousand, fifty-one".