161102027 has 4 divisors (see below), whose sum is σ = 161211000. Its totient is φ = 160993056.

The previous prime is 161101981. The next prime is 161102059. The reversal of 161102027 is 720201161.

161102027 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-161102027 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (161102527) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52238 + ... + 55235.

It is an arithmetic number, because the mean of its divisors is an integer number (40302750).

Almost surely, 2^161102027 is an apocalyptic number.

161102027 is a deficient number, since it is larger than the sum of its proper divisors (108973).

161102027 is a wasteful number, since it uses less digits than its factorization.

161102027 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108972.

The product of its (nonzero) digits is 168, while the sum is 20.

The square root of 161102027 is about 12692.5973307279. The cubic root of 161102027 is about 544.1270732467.

Adding to 161102027 its reverse (720201161), we get a palindrome (881303188).

The spelling of 161102027 in words is "one hundred sixty-one million, one hundred two thousand, twenty-seven".