74161 has 2 divisors, whose sum is σ = 74162. Its totient is φ = 74160.

The previous prime is 74159. The next prime is 74167. The reversal of 74161 is 16147.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 67600 + 6561 = 260^2 + 81^2 .

It is a cyclic number.

It is not a de Polignac number, because 74161 - 2¹ = 74159 is a prime.

Together with 74159, it forms a pair of twin primes.

It is an alternating number because its digits alternate between odd and even.

74161 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (74167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37080 + 37081.

It is an arithmetic number, because the mean of its divisors is an integer number (37081).

2⁷⁴¹⁶¹ is an apocalyptic number.

It is an amenable number.

74161 is a deficient number, since it is larger than the sum of its proper divisors (1).

74161 is an equidigital number, since it uses as much as digits as its factorization.

74161 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 168, while the sum is 19.

The square root of 74161 is about 272.3251732764. The cubic root of 74161 is about 42.0137898785.

The spelling of 74161 in words is "seventy-four thousand, one hundred sixty-one".