75444445 has 8 divisors (see below), whose sum is σ = 90586080. Its totient is φ = 60320400.

The previous prime is 75444437. The next prime is 75444451. The reversal of 75444445 is 54444457.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 75444445 - 2³ = 75444437 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8470 + ... + 14920.

It is an arithmetic number, because the mean of its divisors is an integer number (11323260).

Almost surely, 2^75444445 is an apocalyptic number.

It is an amenable number.

75444445 is a deficient number, since it is larger than the sum of its proper divisors (15141635).

75444445 is a wasteful number, since it uses less digits than its factorization.

75444445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8795.

The product of its digits is 179200, while the sum is 37.

The square root of 75444445 is about 8685.8761791773. The cubic root of 75444445 is about 422.5477135288.

The spelling of 75444445 in words is "seventy-five million, four hundred forty-four thousand, four hundred forty-five".