75007139 has 2 divisors, whose sum is σ = 75007140. Its totient is φ = 75007138.

The previous prime is 75007133. The next prime is 75007171. The reversal of 75007139 is 93170057.

It is an a-pointer prime, because the next prime (75007171) can be obtained adding 75007139 to its sum of digits (32).

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-75007139 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (75007133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37503569 + 37503570.

It is an arithmetic number, because the mean of its divisors is an integer number (37503570).

Almost surely, 2^75007139 is an apocalyptic number.

75007139 is a deficient number, since it is larger than the sum of its proper divisors (1).

75007139 is an equidigital number, since it uses as much as digits as its factorization.

75007139 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6615, while the sum is 32.

The square root of 75007139 is about 8660.6661983937. Note that the first 3 decimals coincide. The cubic root of 75007139 is about 421.7297128170.

The spelling of 75007139 in words is "seventy-five million, seven thousand, one hundred thirty-nine".