75195009 has 6 divisors (see below), whose sum is σ = 108615026. Its totient is φ = 50130000.

The previous prime is 75194983. The next prime is 75195013. The reversal of 75195009 is 90059157.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 49914225 + 25280784 = 7065^2 + 5028^2 .

It is not a de Polignac number, because 75195009 - 2⁷ = 75194881 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (75195209) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4177492 + ... + 4177509.

Almost surely, 2^75195009 is an apocalyptic number.

It is an amenable number.

75195009 is a deficient number, since it is larger than the sum of its proper divisors (33420017).

75195009 is a wasteful number, since it uses less digits than its factorization.

75195009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8355007 (or 8355004 counting only the distinct ones).

The product of its (nonzero) digits is 14175, while the sum is 36.

The square root of 75195009 is about 8671.5055786178. The cubic root of 75195009 is about 422.0815206796.

The spelling of 75195009 in words is "seventy-five million, one hundred ninety-five thousand, nine".