54881838 has 48 divisors (see below), whose sum is σ = 131532336. Its totient is φ = 16398720.

The previous prime is 54881837. The next prime is 54881843. The reversal of 54881838 is 83818845.

It is a super-2 number, since 2×54881838² = 6024032284516488, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 54881793 and 54881802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54881837) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12556 + ... + 16352.

It is an arithmetic number, because the mean of its divisors is an integer number (2740257).

Almost surely, 2^54881838 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 54881838, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (65766168).

54881838 is an abundant number, since it is smaller than the sum of its proper divisors (76650498).

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

54881838 is a wasteful number, since it uses less digits than its factorization.

54881838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3889 (or 3886 counting only the distinct ones).

The product of its digits is 245760, while the sum is 45.

The square root of 54881838 is about 7408.2277232817. The cubic root of 54881838 is about 380.0227087075.

The spelling of 54881838 in words is "fifty-four million, eight hundred eighty-one thousand, eight hundred thirty-eight".