75505379 has 2 divisors, whose sum is σ = 75505380. Its totient is φ = 75505378.

The previous prime is 75505361. The next prime is 75505457. The reversal of 75505379 is 97350557.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-75505379 is a prime.

It is not a weakly prime, because it can be changed into another prime (75505319) 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, 37752689 + 37752690.

It is an arithmetic number, because the mean of its divisors is an integer number (37752690).

Almost surely, 2^75505379 is an apocalyptic number.

75505379 is a deficient number, since it is larger than the sum of its proper divisors (1).

75505379 is an equidigital number, since it uses as much as digits as its factorization.

75505379 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 165375, while the sum is 41.

The square root of 75505379 is about 8689.3831196466. The cubic root of 75505379 is about 422.6614422188.

The spelling of 75505379 in words is "seventy-five million, five hundred five thousand, three hundred seventy-nine".