197321053 has 2 divisors, whose sum is σ = 197321054. Its totient is φ = 197321052.

The previous prime is 197321051. The next prime is 197321083. The reversal of 197321053 is 350123791.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 183385764 + 13935289 = 13542^2 + 3733^2 .

It is a cyclic number.

It is not a de Polignac number, because 197321053 - 2¹ = 197321051 is a prime.

Together with 197321051, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (197321051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98660526 + 98660527.

It is an arithmetic number, because the mean of its divisors is an integer number (98660527).

Almost surely, 2^197321053 is an apocalyptic number.

It is an amenable number.

197321053 is a deficient number, since it is larger than the sum of its proper divisors (1).

197321053 is an equidigital number, since it uses as much as digits as its factorization.

197321053 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5670, while the sum is 31.

The square root of 197321053 is about 14047.1012312149. The cubic root of 197321053 is about 582.1807056082.

The spelling of 197321053 in words is "one hundred ninety-seven million, three hundred twenty-one thousand, fifty-three".