75304949 has 2 divisors, whose sum is σ = 75304950. Its totient is φ = 75304948.

The previous prime is 75304937. The next prime is 75304963. The reversal of 75304949 is 94940357.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 50154724 + 25150225 = 7082^2 + 5015^2 .

It is an emirp because it is prime and its reverse (94940357) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 75304949 - 2⁸ = 75304693 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (75304919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37652474 + 37652475.

It is an arithmetic number, because the mean of its divisors is an integer number (37652475).

Almost surely, 2^75304949 is an apocalyptic number.

It is an amenable number.

75304949 is a deficient number, since it is larger than the sum of its proper divisors (1).

75304949 is an equidigital number, since it uses as much as digits as its factorization.

75304949 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 136080, while the sum is 41.

The square root of 75304949 is about 8677.8424161770. The cubic root of 75304949 is about 422.2871240669.

The spelling of 75304949 in words is "seventy-five million, three hundred four thousand, nine hundred forty-nine".