49540 has 12 divisors (see below), whose sum is σ = 104076. Its totient is φ = 19808.

The previous prime is 49537. The next prime is 49547. The reversal of 49540 is 4594.

It can be written as a sum of positive squares in 2 ways, for example, as 21316 + 28224 = 146^2 + 168^2 .

It is not an unprimeable number, because it can be changed into a prime (49547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1219 + ... + 1258.

It is an arithmetic number, because the mean of its divisors is an integer number (8673).

2⁴⁹⁵⁴⁰ is an apocalyptic number.

It is an amenable number.

49540 is an abundant number, since it is smaller than the sum of its proper divisors (54536).

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

It is a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (52038).

49540 is a wasteful number, since it uses less digits than its factorization.

49540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2486 (or 2484 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 49540 is about 222.5758297749. The cubic root of 49540 is about 36.7269897760.

It can be divided in two parts, 495 and 40, that added together give a palindrome (535).

The spelling of 49540 in words is "forty-nine thousand, five hundred forty".