74455 has 4 divisors (see below), whose sum is σ = 89352. Its totient is φ = 59560.

The previous prime is 74453. The next prime is 74471. The reversal of 74455 is 55447.

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

It is not a de Polignac number, because 74455 - 2¹ = 74453 is a prime.

It is a Duffinian number.

74455 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74453) 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, 7441 + ... + 7450.

It is an arithmetic number, because the mean of its divisors is an integer number (22338).

2⁷⁴⁴⁵⁵ is an apocalyptic number.

74455 is a deficient number, since it is larger than the sum of its proper divisors (14897).

74455 is a wasteful number, since it uses less digits than its factorization.

74455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14896.

The product of its digits is 2800, while the sum is 25.

The square root of 74455 is about 272.8644352055. The cubic root of 74455 is about 42.0692357664.

It can be divided in two parts, 74 and 455, that multiplied together give a triangular number (33670 = T₂₅₉).

The spelling of 74455 in words is "seventy-four thousand, four hundred fifty-five".