75133009 has 4 divisors (see below), whose sum is σ = 85866304. Its totient is φ = 64399716.

The previous prime is 75133001. The next prime is 75133027. The reversal of 75133009 is 90033157.

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, and also an emirpimes, since its reverse is a distinct semiprime: 90033157 = 1663 ⋅54139.

It is a cyclic number.

It is not a de Polignac number, because 75133009 - 2³ = 75133001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (75133001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5366637 + ... + 5366650.

It is an arithmetic number, because the mean of its divisors is an integer number (21466576).

Almost surely, 2^75133009 is an apocalyptic number.

It is an amenable number.

75133009 is a deficient number, since it is larger than the sum of its proper divisors (10733295).

75133009 is a wasteful number, since it uses less digits than its factorization.

75133009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10733294.

The product of its (nonzero) digits is 2835, while the sum is 28.

The square root of 75133009 is about 8667.9299143452. The cubic root of 75133009 is about 421.9654835017.

The spelling of 75133009 in words is "seventy-five million, one hundred thirty-three thousand, nine".