75945797 has 2 divisors, whose sum is σ = 75945798. Its totient is φ = 75945796.

The previous prime is 75945787. The next prime is 75945799. The reversal of 75945797 is 79754957.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 53202436 + 22743361 = 7294^2 + 4769^2 .

It is a cyclic number.

It is not a de Polignac number, because 75945797 - 2⁶ = 75945733 is a prime.

Together with 75945799, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (75945799) 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, 37972898 + 37972899.

It is an arithmetic number, because the mean of its divisors is an integer number (37972899).

Almost surely, 2^75945797 is an apocalyptic number.

It is an amenable number.

75945797 is a deficient number, since it is larger than the sum of its proper divisors (1).

75945797 is an equidigital number, since it uses as much as digits as its factorization.

75945797 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2778300, while the sum is 53.

The square root of 75945797 is about 8714.6885773388. The cubic root of 75945797 is about 423.4816352021.

The spelling of 75945797 in words is "seventy-five million, nine hundred forty-five thousand, seven hundred ninety-seven".