75075091 has 8 divisors (see below), whose sum is σ = 92400224. Its totient is φ = 59400000.

The previous prime is 75075073. The next prime is 75075127. The reversal of 75075091 is 19057057.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 75075091 - 2²¹ = 72977939 is a prime.

It is not an unprimeable number, because it can be changed into a prime (75075001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 412410 + ... + 412591.

It is an arithmetic number, because the mean of its divisors is an integer number (11550028).

Almost surely, 2^75075091 is an apocalyptic number.

75075091 is a deficient number, since it is larger than the sum of its proper divisors (17325133).

75075091 is a wasteful number, since it uses less digits than its factorization.

75075091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 825021.

The product of its (nonzero) digits is 11025, while the sum is 34.

The square root of 75075091 is about 8664.5883341334. The cubic root of 75075091 is about 421.8570283775.

The spelling of 75075091 in words is "seventy-five million, seventy-five thousand, ninety-one".