75045444 has 12 divisors (see below), whose sum is σ = 175106064. Its totient is φ = 25015144.

The previous prime is 75045431. The next prime is 75045473. The reversal of 75045444 is 44454057.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3126882 + ... + 3126905.

It is an arithmetic number, because the mean of its divisors is an integer number (14592172).

Almost surely, 2^75045444 is an apocalyptic number.

It is an amenable number.

75045444 is an abundant number, since it is smaller than the sum of its proper divisors (100060620).

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

75045444 is a wasteful number, since it uses less digits than its factorization.

75045444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6253794 (or 6253792 counting only the distinct ones).

The product of its (nonzero) digits is 44800, while the sum is 33.

The square root of 75045444 is about 8662.8773510884. The cubic root of 75045444 is about 421.8014909069.

The spelling of 75045444 in words is "seventy-five million, forty-five thousand, four hundred forty-four".