45855 has 12 divisors (see below), whose sum is σ = 79560. Its totient is φ = 24432.

The previous prime is 45853. The next prime is 45863. The reversal of 45855 is 55854.

It is not a de Polignac number, because 45855 - 2¹ = 45853 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45853) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 465 + ... + 554.

It is an arithmetic number, because the mean of its divisors is an integer number (6630).

2⁴⁵⁸⁵⁵ is an apocalyptic number.

45855 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

45855 is a deficient number, since it is larger than the sum of its proper divisors (33705).

45855 is a wasteful number, since it uses less digits than its factorization.

45855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1030 (or 1027 counting only the distinct ones).

The product of its digits is 4000, while the sum is 27.

The square root of 45855 is about 214.1378060969. The cubic root of 45855 is about 35.7927911163.

Subtracting 45855 from its reverse (55854), we obtain a palindrome (9999).

It can be divided in two parts, 45 and 855, that added together give a square (900 = 30²).

The spelling of 45855 in words is "forty-five thousand, eight hundred fifty-five".