45044 has 6 divisors (see below), whose sum is σ = 78834. Its totient is φ = 22520.
The previous prime is 45013. The next prime is 45053. The reversal of 45044 is 44054.
It can be written as a sum of positive squares in only one way, i.e., 44944 + 100 = 212^2 + 10^2 .
It is an Ulam number.
It is a congruent number.
It is an unprimeable number.
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 as a sum of consecutive naturals, namely, 5627 + ... + 5634.
It is an arithmetic number, because the mean of its divisors is an integer number (13139).
245044 is an apocalyptic number.
It is an amenable number.
45044 is a deficient number, since it is larger than the sum of its proper divisors (33790).
45044 is a wasteful number, since it uses less digits than its factorization.
45044 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 11265 (or 11263 counting only the distinct ones).
The product of its (nonzero) digits is 320, while the sum is 17.
The square root of 45044 is about 212.2357180118. The cubic root of 45044 is about 35.5805221060.
Adding to 45044 its reverse (44054), we get a palindrome (89098).
Subtracting from 45044 its reverse (44054), we obtain a triangular number (990 = T44).
It can be divided in two parts, 450 and 44, that added together give a palindrome (494).
The spelling of 45044 in words is "forty-five thousand, forty-four".
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