443145561 has 16 divisors (see below), whose sum is σ = 603011520. Its totient is φ = 289373760.

The previous prime is 443145553. The next prime is 443145581. The reversal of 443145561 is 165541344.

It is not a de Polignac number, because 443145561 - 2³ = 443145553 is a prime.

It is not an unprimeable number, because it can be changed into a prime (443145581) 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 15 ways as a sum of consecutive naturals, for example, 110766 + ... + 114696.

It is an arithmetic number, because the mean of its divisors is an integer number (37688220).

Almost surely, 2^443145561 is an apocalyptic number.

It is an amenable number.

443145561 is a deficient number, since it is larger than the sum of its proper divisors (159865959).

443145561 is a wasteful number, since it uses less digits than its factorization.

443145561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4696.

The product of its digits is 28800, while the sum is 33.

The square root of 443145561 is about 21051.0228017548. The cubic root of 443145561 is about 762.3986777846.

The spelling of 443145561 in words is "four hundred forty-three million, one hundred forty-five thousand, five hundred sixty-one".