161675273 has 2 divisors, whose sum is σ = 161675274. Its totient is φ = 161675272.

The previous prime is 161675243. The next prime is 161675279. The reversal of 161675273 is 372576161.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 151093264 + 10582009 = 12292^2 + 3253^2 .

It is a cyclic number.

It is not a de Polignac number, because 161675273 - 2¹² = 161671177 is a prime.

It is a super-2 number, since 2×161675273² = 52277787799249058, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (161675279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80837636 + 80837637.

It is an arithmetic number, because the mean of its divisors is an integer number (80837637).

Almost surely, 2^161675273 is an apocalyptic number.

It is an amenable number.

161675273 is a deficient number, since it is larger than the sum of its proper divisors (1).

161675273 is an equidigital number, since it uses as much as digits as its factorization.

161675273 is an evil number, because the sum of its binary digits is even.

The product of its digits is 52920, while the sum is 38.

The square root of 161675273 is about 12715.1591810720. The cubic root of 161675273 is about 544.7716946275.

The spelling of 161675273 in words is "one hundred sixty-one million, six hundred seventy-five thousand, two hundred seventy-three".