161182057 has 2 divisors, whose sum is σ = 161182058. Its totient is φ = 161182056.

The previous prime is 161182033. The next prime is 161182067. The reversal of 161182057 is 750281161.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 150528361 + 10653696 = 12269^2 + 3264^2 .

It is a cyclic number.

It is not a de Polignac number, because 161182057 - 2⁷ = 161181929 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (161182067) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80591028 + 80591029.

It is an arithmetic number, because the mean of its divisors is an integer number (80591029).

Almost surely, 2^161182057 is an apocalyptic number.

It is an amenable number.

161182057 is a deficient number, since it is larger than the sum of its proper divisors (1).

161182057 is an equidigital number, since it uses as much as digits as its factorization.

161182057 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3360, while the sum is 31.

The square root of 161182057 is about 12695.7495643227. The cubic root of 161182057 is about 544.2171595969.

The spelling of 161182057 in words is "one hundred sixty-one million, one hundred eighty-two thousand, fifty-seven".