161044432 has 20 divisors (see below), whose sum is σ = 315532260. Its totient is φ = 79616768.

The previous prime is 161044421. The next prime is 161044439. The reversal of 161044432 is 234440161.

161044432 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 69956496 + 91087936 = 8364^2 + 9544^2 .

It is a junction number, because it is equal to n+sod(n) for n = 161044397 and 161044406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161044439) 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, 55123 + ... + 57970.

It is an arithmetic number, because the mean of its divisors is an integer number (15776613).

Almost surely, 2^161044432 is an apocalyptic number.

It is an amenable number.

161044432 is a deficient number, since it is larger than the sum of its proper divisors (154487828).

161044432 is a wasteful number, since it uses less digits than its factorization.

161044432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113190 (or 113184 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 25.

The square root of 161044432 is about 12690.3282857458. The cubic root of 161044432 is about 544.0622225540.

Adding to 161044432 its reverse (234440161), we get a palindrome (395484593).

The spelling of 161044432 in words is "one hundred sixty-one million, forty-four thousand, four hundred thirty-two".