273226861 has 2 divisors, whose sum is σ = 273226862. Its totient is φ = 273226860.

The previous prime is 273226841. The next prime is 273226903. The reversal of 273226861 is 168622372.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 272745225 + 481636 = 16515^2 + 694^2 .

It is a cyclic number.

It is not a de Polignac number, because 273226861 - 2¹¹ = 273224813 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 273226861.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (273226841) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 136613430 + 136613431.

It is an arithmetic number, because the mean of its divisors is an integer number (136613431).

Almost surely, 2^273226861 is an apocalyptic number.

It is an amenable number.

273226861 is a deficient number, since it is larger than the sum of its proper divisors (1).

273226861 is an equidigital number, since it uses as much as digits as its factorization.

273226861 is an evil number, because the sum of its binary digits is even.

The product of its digits is 48384, while the sum is 37.

The square root of 273226861 is about 16529.5753423976. The cubic root of 273226861 is about 648.8950545051.

The spelling of 273226861 in words is "two hundred seventy-three million, two hundred twenty-six thousand, eight hundred sixty-one".