75001001 has 2 divisors, whose sum is σ = 75001002. Its totient is φ = 75001000.

The previous prime is 75000983. The next prime is 75001007. The reversal of 75001001 is 10010057.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 54760000 + 20241001 = 7400^2 + 4499^2 .

It is a cyclic number.

It is not a de Polignac number, because 75001001 - 2¹⁸ = 74738857 is a prime.

It is a Sophie Germain prime.

75001001 is a modest number, since divided by 1001 gives 75 as remainder.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (75001007) 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, 37500500 + 37500501.

It is an arithmetic number, because the mean of its divisors is an integer number (37500501).

Almost surely, 2^75001001 is an apocalyptic number.

It is an amenable number.

75001001 is a deficient number, since it is larger than the sum of its proper divisors (1).

75001001 is an equidigital number, since it uses as much as digits as its factorization.

75001001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 35, while the sum is 14.

The square root of 75001001 is about 8660.3118304135. The cubic root of 75001001 is about 421.7182088116.

Adding to 75001001 its reverse (10010057), we get a palindrome (85011058).

The spelling of 75001001 in words is "seventy-five million, one thousand, one".