75049049 has 2 divisors, whose sum is σ = 75049050. Its totient is φ = 75049048.

The previous prime is 75049043. The next prime is 75049081. The reversal of 75049049 is 94094057.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 60341824 + 14707225 = 7768^2 + 3835^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-75049049 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (75049043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37524524 + 37524525.

It is an arithmetic number, because the mean of its divisors is an integer number (37524525).

Almost surely, 2^75049049 is an apocalyptic number.

It is an amenable number.

75049049 is a deficient number, since it is larger than the sum of its proper divisors (1).

75049049 is an equidigital number, since it uses as much as digits as its factorization.

75049049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 45360, while the sum is 38.

The square root of 75049049 is about 8663.0854203338. The cubic root of 75049049 is about 421.8082449035.

The spelling of 75049049 in words is "seventy-five million, forty-nine thousand, forty-nine".