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74953 = 174409
BaseRepresentation
bin10010010011001001
310210211001
4102103021
54344303
61335001
7431344
oct222311
9123731
1074953
115134a
1237461
1328168
141d45b
151731d
hex124c9

74953 has 4 divisors (see below), whose sum is σ = 79380. Its totient is φ = 70528.

The previous prime is 74941. The next prime is 74959. The reversal of 74953 is 35947.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 35947 = 103349.

It can be written as a sum of positive squares in 2 ways, for example, as 29584 + 45369 = 172^2 + 213^2 .

It is a cyclic number.

It is not a de Polignac number, because 74953 - 29 = 74441 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74959) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2188 + ... + 2221.

It is an arithmetic number, because the mean of its divisors is an integer number (19845).

274953 is an apocalyptic number.

It is an amenable number.

74953 is a deficient number, since it is larger than the sum of its proper divisors (4427).

74953 is a wasteful number, since it uses less digits than its factorization.

74953 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4426.

The product of its digits is 3780, while the sum is 28.

The square root of 74953 is about 273.7754554375. The cubic root of 74953 is about 42.1628222387.

The spelling of 74953 in words is "seventy-four thousand, nine hundred fifty-three".

Divisors: 1 17 4409 74953