173138033 has 4 divisors (see below), whose sum is σ = 179108340. Its totient is φ = 167167728.

The previous prime is 173138029. The next prime is 173138041. The reversal of 173138033 is 330831371.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 330831371 = 13 ⋅25448567.

It can be written as a sum of positive squares in 2 ways, for example, as 136025569 + 37112464 = 11663^2 + 6092^2 .

It is a cyclic number.

It is not a de Polignac number, because 173138033 - 2² = 173138029 is a prime.

It is a super-2 number, since 2×173138033² = 59953556942218178, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (29), and also a Moran number because the ratio is a prime number: 5970277 = 173138033 / (1 + 7 + 3 + 1 + 3 + 8 + 0 + 3 + 3).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 173137987 and 173138005.

It is not an unprimeable number, because it can be changed into a prime (173138003) 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, 2985110 + ... + 2985167.

It is an arithmetic number, because the mean of its divisors is an integer number (44777085).

Almost surely, 2^173138033 is an apocalyptic number.

It is an amenable number.

173138033 is a deficient number, since it is larger than the sum of its proper divisors (5970307).

173138033 is an equidigital number, since it uses as much as digits as its factorization.

173138033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5970306.

The product of its (nonzero) digits is 4536, while the sum is 29.

The square root of 173138033 is about 13158.1926190492. The cubic root of 173138033 is about 557.3536202660.

The spelling of 173138033 in words is "one hundred seventy-three million, one hundred thirty-eight thousand, thirty-three".