75444443 has 8 divisors (see below), whose sum is σ = 77788128. Its totient is φ = 73116864.

The previous prime is 75444437. The next prime is 75444451. The reversal of 75444443 is 34444457.

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

It is a cyclic number.

It is not a de Polignac number, because 75444443 - 2⁶ = 75444379 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (75444043) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5855 + ... + 13607.

It is an arithmetic number, because the mean of its divisors is an integer number (9723516).

Almost surely, 2^75444443 is an apocalyptic number.

75444443 is a deficient number, since it is larger than the sum of its proper divisors (2343685).

75444443 is a wasteful number, since it uses less digits than its factorization.

75444443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8053.

The product of its digits is 107520, while the sum is 35.

The square root of 75444443 is about 8685.8760640479. The cubic root of 75444443 is about 422.5477097950.

The spelling of 75444443 in words is "seventy-five million, four hundred forty-four thousand, four hundred forty-three".