49518 has 32 divisors (see below), whose sum is σ = 126720. Its totient is φ = 14040.

The previous prime is 49499. The next prime is 49523. The reversal of 49518 is 81594.

49518 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 49491 and 49500.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 313 + ... + 443.

It is an arithmetic number, because the mean of its divisors is an integer number (3960).

2⁴⁹⁵¹⁸ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 49518, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (63360).

49518 is an abundant number, since it is smaller than the sum of its proper divisors (77202).

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

49518 is a wasteful number, since it uses less digits than its factorization.

49518 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149 (or 143 counting only the distinct ones).

The product of its digits is 1440, while the sum is 27.

The square root of 49518 is about 222.5264029278. The cubic root of 49518 is about 36.7215523288.

The spelling of 49518 in words is "forty-nine thousand, five hundred eighteen".