74155 has 4 divisors (see below), whose sum is σ = 88992. Its totient is φ = 59320.

The previous prime is 74149. The next prime is 74159. The reversal of 74155 is 55147.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 74155 - 2⁷ = 74027 is a prime.

It is a Smith number, since the sum of its digits (22) 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.

74155 is a lucky number.

It is a nialpdrome in base 5.

It is not an unprimeable number, because it can be changed into a prime (74159) 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, 7411 + ... + 7420.

It is an arithmetic number, because the mean of its divisors is an integer number (22248).

2⁷⁴¹⁵⁵ is an apocalyptic number.

74155 is a deficient number, since it is larger than the sum of its proper divisors (14837).

74155 is a wasteful number, since it uses less digits than its factorization.

74155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14836.

The product of its digits is 700, while the sum is 22.

The square root of 74155 is about 272.3141568116. The cubic root of 74155 is about 42.0126568053.

It can be divided in two parts, 741 and 55, that multiplied together give a triangular number (40755 = T₂₈₅).

The spelling of 74155 in words is "seventy-four thousand, one hundred fifty-five".