75499775 has 12 divisors (see below), whose sum is σ = 100821672. Its totient is φ = 55753440.

The previous prime is 75499769. The next prime is 75499783. The reversal of 75499775 is 57799457.

It is not a de Polignac number, because 75499775 - 2²⁰ = 74451199 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 in 11 ways as a sum of consecutive naturals, for example, 115829 + ... + 116478.

It is an arithmetic number, because the mean of its divisors is an integer number (8401806).

Almost surely, 2^75499775 is an apocalyptic number.

75499775 is a deficient number, since it is larger than the sum of its proper divisors (25321897).

75499775 is a wasteful number, since it uses less digits than its factorization.

75499775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 232330 (or 232325 counting only the distinct ones).

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

The square root of 75499775 is about 8689.0606511866. The cubic root of 75499775 is about 422.6509853332.

The spelling of 75499775 in words is "seventy-five million, four hundred ninety-nine thousand, seven hundred seventy-five".