75445254457 has 2 divisors, whose sum is σ = 75445254458. Its totient is φ = 75445254456.

The previous prime is 75445254449. The next prime is 75445254461.

75445254457 is nontrivially palindromic in base 10.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 49667025321 + 25778229136 = 222861^2 + 160556^2 .

It is a palprime.

It is a cyclic number.

It is not a de Polignac number, because 75445254457 - 2³ = 75445254449 is a prime.

It is not a weakly prime, because it can be changed into another prime (75445654457) 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 as a sum of consecutive naturals, namely, 37722627228 + 37722627229.

It is an arithmetic number, because the mean of its divisors is an integer number (37722627229).

Almost surely, 2^75445254457 is an apocalyptic number.

It is an amenable number.

75445254457 is a deficient number, since it is larger than the sum of its proper divisors (1).

75445254457 is an equidigital number, since it uses as much as digits as its factorization.

75445254457 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15680000, while the sum is 52.

The spelling of 75445254457 in words is "seventy-five billion, four hundred forty-five million, two hundred fifty-four thousand, four hundred fifty-seven".