44540 has 24 divisors (see below), whose sum is σ = 99792. Its totient is φ = 16640.

The previous prime is 44537. The next prime is 44543. The reversal of 44540 is 4544.

It is an interprime number because it is at equal distance from previous prime (44537) and next prime (44543).

It is a Harshad number since it is a multiple of its sum of digits (17).

It is an Ulam number.

It is a plaindrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44543) 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 7 ways as a sum of consecutive naturals, for example, 275 + ... + 405.

It is an arithmetic number, because the mean of its divisors is an integer number (4158).

2⁴⁴⁵⁴⁰ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 44540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (49896).

44540 is an abundant number, since it is smaller than the sum of its proper divisors (55252).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

44540 is a wasteful number, since it uses less digits than its factorization.

44540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157 (or 155 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 17.

The square root of 44540 is about 211.0450188941. The cubic root of 44540 is about 35.4473198672.

The spelling of 44540 in words is "forty-four thousand, five hundred forty".