273957997 has 2 divisors, whose sum is σ = 273957998. Its totient is φ = 273957996.

The previous prime is 273957961. The next prime is 273958021. The reversal of 273957997 is 799759372.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 221235876 + 52722121 = 14874^2 + 7261^2 .

It is a cyclic number.

It is not a de Polignac number, because 273957997 - 2²³ = 265569389 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (273957947) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 136978998 + 136978999.

It is an arithmetic number, because the mean of its divisors is an integer number (136978999).

Almost surely, 2^273957997 is an apocalyptic number.

It is an amenable number.

273957997 is a deficient number, since it is larger than the sum of its proper divisors (1).

273957997 is an equidigital number, since it uses as much as digits as its factorization.

273957997 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7501410, while the sum is 58.

The square root of 273957997 is about 16551.6765616055. The cubic root of 273957997 is about 649.4733382797.

The spelling of 273957997 in words is "two hundred seventy-three million, nine hundred fifty-seven thousand, nine hundred ninety-seven".