197057801 has 2 divisors, whose sum is σ = 197057802. Its totient is φ = 197057800.

The previous prime is 197057771. The next prime is 197057803. The reversal of 197057801 is 108750791.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 195328576 + 1729225 = 13976^2 + 1315^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-197057801 is a prime.

Together with 197057803, 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 (197057803) 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, 98528900 + 98528901.

It is an arithmetic number, because the mean of its divisors is an integer number (98528901).

Almost surely, 2^197057801 is an apocalyptic number.

It is an amenable number.

197057801 is a deficient number, since it is larger than the sum of its proper divisors (1).

197057801 is an equidigital number, since it uses as much as digits as its factorization.

197057801 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17640, while the sum is 38.

The square root of 197057801 is about 14037.7277719722. The cubic root of 197057801 is about 581.9216887425.

The spelling of 197057801 in words is "one hundred ninety-seven million, fifty-seven thousand, eight hundred one".