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40855 = 58171
BaseRepresentation
bin1001111110010111
32002001011
421332113
52301410
6513051
7230053
oct117627
962034
1040855
1128771
121b787
1315799
1410c63
15c18a
hex9f97

40855 has 4 divisors (see below), whose sum is σ = 49032. Its totient is φ = 32680.

The previous prime is 40853. The next prime is 40867. The reversal of 40855 is 55804.

40855 = 802 + 812 + ... + 852.

It is a happy number.

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

It is not a de Polignac number, because 40855 - 21 = 40853 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.

40855 is a lucky number.

It is a plaindrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40853) by changing a digit.

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, 4081 + ... + 4090.

It is an arithmetic number, because the mean of its divisors is an integer number (12258).

240855 is an apocalyptic number.

40855 is a deficient number, since it is larger than the sum of its proper divisors (8177).

40855 is an equidigital number, since it uses as much as digits as its factorization.

40855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8176.

The product of its (nonzero) digits is 800, while the sum is 22.

The square root of 40855 is about 202.1261982030. The cubic root of 40855 is about 34.4414746736.

The spelling of 40855 in words is "forty thousand, eight hundred fifty-five".

Divisors: 1 5 8171 40855