273572161 has 2 divisors, whose sum is σ = 273572162. Its totient is φ = 273572160.

The previous prime is 273572119. The next prime is 273572171. The reversal of 273572161 is 161275372.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 270799936 + 2772225 = 16456^2 + 1665^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-273572161 is a prime.

It is not a weakly prime, because it can be changed into another prime (273572111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 136786080 + 136786081.

It is an arithmetic number, because the mean of its divisors is an integer number (136786081).

Almost surely, 2^273572161 is an apocalyptic number.

It is an amenable number.

273572161 is a deficient number, since it is larger than the sum of its proper divisors (1).

273572161 is an equidigital number, since it uses as much as digits as its factorization.

273572161 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17640, while the sum is 34.

The square root of 273572161 is about 16540.0169588789. The cubic root of 273572161 is about 649.1682940374.

The spelling of 273572161 in words is "two hundred seventy-three million, five hundred seventy-two thousand, one hundred sixty-one".