75378893 has 2 divisors, whose sum is σ = 75378894. Its totient is φ = 75378892.

The previous prime is 75378829. The next prime is 75378923. The reversal of 75378893 is 39887357.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 47637604 + 27741289 = 6902^2 + 5267^2 .

It is a cyclic number.

It is not a de Polignac number, because 75378893 - 2⁶ = 75378829 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (75378803) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37689446 + 37689447.

It is an arithmetic number, because the mean of its divisors is an integer number (37689447).

Almost surely, 2^75378893 is an apocalyptic number.

It is an amenable number.

75378893 is a deficient number, since it is larger than the sum of its proper divisors (1).

75378893 is an equidigital number, since it uses as much as digits as its factorization.

75378893 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1270080, while the sum is 50.

The square root of 75378893 is about 8682.1018768499. The cubic root of 75378893 is about 422.4252972975.

The spelling of 75378893 in words is "seventy-five million, three hundred seventy-eight thousand, eight hundred ninety-three".