75137165 has 4 divisors (see below), whose sum is σ = 90164604. Its totient is φ = 60109728.

The previous prime is 75137143. The next prime is 75137171. The reversal of 75137165 is 56173157.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 56173157 = 41 ⋅1370077.

It can be written as a sum of positive squares in 2 ways, for example, as 18541636 + 56595529 = 4306^2 + 7523^2 .

It is a cyclic number.

It is not a de Polignac number, because 75137165 - 2⁸ = 75136909 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7513712 + ... + 7513721.

It is an arithmetic number, because the mean of its divisors is an integer number (22541151).

Almost surely, 2^75137165 is an apocalyptic number.

It is an amenable number.

75137165 is a deficient number, since it is larger than the sum of its proper divisors (15027439).

75137165 is a wasteful number, since it uses less digits than its factorization.

75137165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15027438.

The product of its digits is 22050, while the sum is 35.

The square root of 75137165 is about 8668.1696453173. The cubic root of 75137165 is about 421.9732637314.

The spelling of 75137165 in words is "seventy-five million, one hundred thirty-seven thousand, one hundred sixty-five".