161055316 has 6 divisors (see below), whose sum is σ = 281846810. Its totient is φ = 80527656.

The previous prime is 161055259. The next prime is 161055319. The reversal of 161055316 is 613550161.

It can be written as a sum of positive squares in only one way, i.e., 158508100 + 2547216 = 12590^2 + 1596^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161055319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20131911 + ... + 20131918.

Almost surely, 2^161055316 is an apocalyptic number.

It is an amenable number.

161055316 is a deficient number, since it is larger than the sum of its proper divisors (120791494).

161055316 is a wasteful number, since it uses less digits than its factorization.

161055316 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40263833 (or 40263831 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 28.

The square root of 161055316 is about 12690.7571090144. The cubic root of 161055316 is about 544.0744788814.

The spelling of 161055316 in words is "one hundred sixty-one million, fifty-five thousand, three hundred sixteen".