161541337 has 2 divisors, whose sum is σ = 161541338. Its totient is φ = 161541336.

The previous prime is 161541311. The next prime is 161541343. The reversal of 161541337 is 733145161.

161541337 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 120209296 + 41332041 = 10964^2 + 6429^2 .

It is a cyclic number.

It is not a de Polignac number, because 161541337 - 2¹¹ = 161539289 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 161541299 and 161541308.

It is not a weakly prime, because it can be changed into another prime (161541377) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80770668 + 80770669.

It is an arithmetic number, because the mean of its divisors is an integer number (80770669).

Almost surely, 2^161541337 is an apocalyptic number.

It is an amenable number.

161541337 is a deficient number, since it is larger than the sum of its proper divisors (1).

161541337 is an equidigital number, since it uses as much as digits as its factorization.

161541337 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7560, while the sum is 31.

The square root of 161541337 is about 12709.8913055935. The cubic root of 161541337 is about 544.6212187215.

Adding to 161541337 its reverse (733145161), we get a palindrome (894686498).

The spelling of 161541337 in words is "one hundred sixty-one million, five hundred forty-one thousand, three hundred thirty-seven".