161159101 has 2 divisors, whose sum is σ = 161159102. Its totient is φ = 161159100.

The previous prime is 161159059. The next prime is 161159143. The reversal of 161159101 is 101951161.

It is a balanced prime because it is at equal distance from previous prime (161159059) and next prime (161159143).

It can be written as a sum of positive squares in only one way, i.e., 156275001 + 4884100 = 12501^2 + 2210^2 .

It is a cyclic number.

It is not a de Polignac number, because 161159101 - 2¹¹ = 161157053 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (161159171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80579550 + 80579551.

It is an arithmetic number, because the mean of its divisors is an integer number (80579551).

Almost surely, 2^161159101 is an apocalyptic number.

It is an amenable number.

161159101 is a deficient number, since it is larger than the sum of its proper divisors (1).

161159101 is an equidigital number, since it uses as much as digits as its factorization.

161159101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 270, while the sum is 25.

The square root of 161159101 is about 12694.8454500242. The cubic root of 161159101 is about 544.1913220596.

The spelling of 161159101 in words is "one hundred sixty-one million, one hundred fifty-nine thousand, one hundred one".