273856081 has 2 divisors, whose sum is σ = 273856082. Its totient is φ = 273856080.

The previous prime is 273856073. The next prime is 273856087. The reversal of 273856081 is 180658372.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 238857025 + 34999056 = 15455^2 + 5916^2 .

It is a cyclic number.

It is not a de Polignac number, because 273856081 - 2³ = 273856073 is a prime.

It is a super-2 number, since 2×273856081² = 149994306201357122, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (273856087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 136928040 + 136928041.

It is an arithmetic number, because the mean of its divisors is an integer number (136928041).

Almost surely, 2^273856081 is an apocalyptic number.

It is an amenable number.

273856081 is a deficient number, since it is larger than the sum of its proper divisors (1).

273856081 is an equidigital number, since it uses as much as digits as its factorization.

273856081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 80640, while the sum is 40.

The square root of 273856081 is about 16548.5975538714. The cubic root of 273856081 is about 649.3927907320.

The spelling of 273856081 in words is "two hundred seventy-three million, eight hundred fifty-six thousand, eighty-one".