445161132 has 72 divisors (see below), whose sum is σ = 1230001136. Its totient is φ = 134918784.

The previous prime is 445161109. The next prime is 445161139. The reversal of 445161132 is 231161544.

It is a happy number.

445161132 is a `hidden beast` number, since 4 + 45 + 1 + 611 + 3 + 2 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 445161096 and 445161105.

It is not an unprimeable number, because it can be changed into a prime (445161139) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 24258 + ... + 38454.

Almost surely, 2^445161132 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 445161132, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (615000568).

445161132 is an abundant number, since it is smaller than the sum of its proper divisors (784840004).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

445161132 is a wasteful number, since it uses less digits than its factorization.

445161132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14287 (or 14282 counting only the distinct ones).

The product of its digits is 2880, while the sum is 27.

The square root of 445161132 is about 21098.8419587427. The cubic root of 445161132 is about 763.5528093028.

The spelling of 445161132 in words is "four hundred forty-five million, one hundred sixty-one thousand, one hundred thirty-two".