75271009 has 4 divisors (see below), whose sum is σ = 82113840. Its totient is φ = 68428180.

The previous prime is 75271003. The next prime is 75271013. The reversal of 75271009 is 90017257.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 75271009 - 2⁵ = 75270977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (75271003) 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 3 ways as a sum of consecutive naturals, for example, 3421399 + ... + 3421420.

It is an arithmetic number, because the mean of its divisors is an integer number (20528460).

Almost surely, 2^75271009 is an apocalyptic number.

It is an amenable number.

75271009 is a deficient number, since it is larger than the sum of its proper divisors (6842831).

75271009 is a wasteful number, since it uses less digits than its factorization.

75271009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6842830.

The product of its (nonzero) digits is 4410, while the sum is 31.

The square root of 75271009 is about 8675.8866405688. The cubic root of 75271009 is about 422.2236728200.

The spelling of 75271009 in words is "seventy-five million, two hundred seventy-one thousand, nine".