161547041 has 2 divisors, whose sum is σ = 161547042. Its totient is φ = 161547040.

The previous prime is 161547019. The next prime is 161547059. The reversal of 161547041 is 140745161.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 136796416 + 24750625 = 11696^2 + 4975^2 .

It is an emirp because it is prime and its reverse (140745161) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 161547041 - 2⁶ = 161546977 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 161546995 and 161547013.

It is not a weakly prime, because it can be changed into another prime (161547091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80773520 + 80773521.

It is an arithmetic number, because the mean of its divisors is an integer number (80773521).

Almost surely, 2^161547041 is an apocalyptic number.

It is an amenable number.

161547041 is a deficient number, since it is larger than the sum of its proper divisors (1).

161547041 is an equidigital number, since it uses as much as digits as its factorization.

161547041 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 29.

The square root of 161547041 is about 12710.1156957756. The cubic root of 161547041 is about 544.6276288102.

The spelling of 161547041 in words is "one hundred sixty-one million, five hundred forty-seven thousand, forty-one".