161211359 has 2 divisors, whose sum is σ = 161211360. Its totient is φ = 161211358.

The previous prime is 161211353. The next prime is 161211361. The reversal of 161211359 is 953112161.

It is a strong prime.

It is an emirp because it is prime and its reverse (953112161) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 161211359 - 2⁸ = 161211103 is a prime.

Together with 161211361, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (161211353) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80605679 + 80605680.

It is an arithmetic number, because the mean of its divisors is an integer number (80605680).

Almost surely, 2^161211359 is an apocalyptic number.

161211359 is a deficient number, since it is larger than the sum of its proper divisors (1).

161211359 is an equidigital number, since it uses as much as digits as its factorization.

161211359 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1620, while the sum is 29.

The square root of 161211359 is about 12696.9035201501. The cubic root of 161211359 is about 544.2501361479.

The spelling of 161211359 in words is "one hundred sixty-one million, two hundred eleven thousand, three hundred fifty-nine".