75245939 has 2 divisors, whose sum is σ = 75245940. Its totient is φ = 75245938.

The previous prime is 75245887. The next prime is 75245941. The reversal of 75245939 is 93954257.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 75245939 - 2¹⁶ = 75180403 is a prime.

Together with 75245941, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 75245939.

It is not a weakly prime, because it can be changed into another prime (75245539) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37622969 + 37622970.

It is an arithmetic number, because the mean of its divisors is an integer number (37622970).

Almost surely, 2^75245939 is an apocalyptic number.

75245939 is a deficient number, since it is larger than the sum of its proper divisors (1).

75245939 is an equidigital number, since it uses as much as digits as its factorization.

75245939 is an evil number, because the sum of its binary digits is even.

The product of its digits is 340200, while the sum is 44.

The square root of 75245939 is about 8674.4417111420. The cubic root of 75245939 is about 422.1767918981.

The spelling of 75245939 in words is "seventy-five million, two hundred forty-five thousand, nine hundred thirty-nine".