2175601997 has 2 divisors, whose sum is σ = 2175601998. Its totient is φ = 2175601996.

The previous prime is 2175601937. The next prime is 2175601999. The reversal of 2175601997 is 7991065712.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2045391076 + 130210921 = 45226^2 + 11411^2 .

It is a cyclic number.

It is not a de Polignac number, because 2175601997 - 2²⁰ = 2174553421 is a prime.

Together with 2175601999, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2175601999) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1087800998 + 1087800999.

It is an arithmetic number, because the mean of its divisors is an integer number (1087800999).

Almost surely, 2^2175601997 is an apocalyptic number.

It is an amenable number.

2175601997 is a deficient number, since it is larger than the sum of its proper divisors (1).

2175601997 is an equidigital number, since it uses as much as digits as its factorization.

2175601997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 238140, while the sum is 47.

The square root of 2175601997 is about 46643.3489042114. The cubic root of 2175601997 is about 1295.7657098593.

The spelling of 2175601997 in words is "two billion, one hundred seventy-five million, six hundred one thousand, nine hundred ninety-seven".