75133165 has 4 divisors (see below), whose sum is σ = 90159804. Its totient is φ = 60106528.

The previous prime is 75133147. The next prime is 75133211. The reversal of 75133165 is 56133157.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 56133157 = 31 ⋅1810747.

It can be written as a sum of positive squares in 2 ways, for example, as 39778249 + 35354916 = 6307^2 + 5946^2 .

It is a cyclic number.

It is not a de Polignac number, because 75133165 - 2²¹ = 73036013 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7513312 + ... + 7513321.

It is an arithmetic number, because the mean of its divisors is an integer number (22539951).

Almost surely, 2^75133165 is an apocalyptic number.

It is an amenable number.

75133165 is a deficient number, since it is larger than the sum of its proper divisors (15026639).

75133165 is a wasteful number, since it uses less digits than its factorization.

75133165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15026638.

The product of its digits is 9450, while the sum is 31.

The square root of 75133165 is about 8667.9389130289. The cubic root of 75133165 is about 421.9657755463.

The spelling of 75133165 in words is "seventy-five million, one hundred thirty-three thousand, one hundred sixty-five".