273997 has 2 divisors, whose sum is σ = 273998. Its totient is φ = 273996.

The previous prime is 273979. The next prime is 274007. The reversal of 273997 is 799372.

Together with previous prime (273979) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 264196 + 9801 = 514^2 + 99^2 .

It is a cyclic number.

It is not a de Polignac number, because 273997 - 2¹⁵ = 241229 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (273967) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 136998 + 136999.

It is an arithmetic number, because the mean of its divisors is an integer number (136999).

2²⁷³⁹⁹⁷ is an apocalyptic number.

It is an amenable number.

273997 is a deficient number, since it is larger than the sum of its proper divisors (1).

273997 is an equidigital number, since it uses as much as digits as its factorization.

273997 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 23814, while the sum is 37.

The square root of 273997 is about 523.4472275216. The cubic root of 273997 is about 64.9504158341.

The spelling of 273997 in words is "two hundred seventy-three thousand, nine hundred ninety-seven".