181675057 has 2 divisors, whose sum is σ = 181675058. Its totient is φ = 181675056.

The previous prime is 181675037. The next prime is 181675061. The reversal of 181675057 is 750576181.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 102090816 + 79584241 = 10104^2 + 8921^2 .

It is a cyclic number.

It is not a de Polignac number, because 181675057 - 2⁷ = 181674929 is a prime.

It is not a weakly prime, because it can be changed into another prime (181675037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 90837528 + 90837529.

It is an arithmetic number, because the mean of its divisors is an integer number (90837529).

Almost surely, 2^181675057 is an apocalyptic number.

It is an amenable number.

181675057 is a deficient number, since it is larger than the sum of its proper divisors (1).

181675057 is an equidigital number, since it uses as much as digits as its factorization.

181675057 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 58800, while the sum is 40.

The square root of 181675057 is about 13478.6889941121. The cubic root of 181675057 is about 566.3676445832.

The spelling of 181675057 in words is "one hundred eighty-one million, six hundred seventy-five thousand, fifty-seven".