161059697 has 2 divisors, whose sum is σ = 161059698. Its totient is φ = 161059696.

The previous prime is 161059693. The next prime is 161059699. The reversal of 161059697 is 796950161.

It is a happy number.

161059697 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., 109851361 + 51208336 = 10481^2 + 7156^2 .

It is a cyclic number.

It is not a de Polignac number, because 161059697 - 2² = 161059693 is a prime.

Together with 161059699, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (161059693) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80529848 + 80529849.

It is an arithmetic number, because the mean of its divisors is an integer number (80529849).

Almost surely, 2^161059697 is an apocalyptic number.

It is an amenable number.

161059697 is a deficient number, since it is larger than the sum of its proper divisors (1).

161059697 is an equidigital number, since it uses as much as digits as its factorization.

161059697 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 102060, while the sum is 44.

The square root of 161059697 is about 12690.9297137759. The cubic root of 161059697 is about 544.0794121112.

The spelling of 161059697 in words is "one hundred sixty-one million, fifty-nine thousand, six hundred ninety-seven".