75044441 has 2 divisors, whose sum is σ = 75044442. Its totient is φ = 75044440.

The previous prime is 75044419. The next prime is 75044491. The reversal of 75044441 is 14444057.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 74995600 + 48841 = 8660^2 + 221^2 .

It is an emirp because it is prime and its reverse (14444057) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-75044441 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (75044491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37522220 + 37522221.

It is an arithmetic number, because the mean of its divisors is an integer number (37522221).

Almost surely, 2^75044441 is an apocalyptic number.

It is an amenable number.

75044441 is a deficient number, since it is larger than the sum of its proper divisors (1).

75044441 is an equidigital number, since it uses as much as digits as its factorization.

75044441 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8960, while the sum is 29.

The square root of 75044441 is about 8662.8194601989. The cubic root of 75044441 is about 421.7996117399.

Adding to 75044441 its reverse (14444057), we get a palindrome (89488498).

The spelling of 75044441 in words is "seventy-five million, forty-four thousand, four hundred forty-one".