445501161 has 32 divisors (see below), whose sum is σ = 780307200. Its totient is φ = 245790720.

The previous prime is 445501139. The next prime is 445501171. The reversal of 445501161 is 161105544.

445501161 is a `hidden beast` number, since 44 + 550 + 11 + 61 = 666.

It is not a de Polignac number, because 445501161 - 2¹⁴ = 445484777 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (445501171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 35160 + ... + 46121.

It is an arithmetic number, because the mean of its divisors is an integer number (24384600).

Almost surely, 2^445501161 is an apocalyptic number.

It is an amenable number.

445501161 is a deficient number, since it is larger than the sum of its proper divisors (334806039).

445501161 is a wasteful number, since it uses less digits than its factorization.

445501161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81326 (or 81320 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 27.

The square root of 445501161 is about 21106.8984220799. The cubic root of 445501161 is about 763.7471689049.

The spelling of 445501161 in words is "four hundred forty-five million, five hundred one thousand, one hundred sixty-one".