5481000 has 256 divisors, whose sum is σ = 22464000. Its totient is φ = 1209600.

The previous prime is 5480989. The next prime is 5481011. The reversal of 5481000 is 1845.

It is an interprime number because it is at equal distance from previous prime (5480989) and next prime (5481011).

It is a super-2 number, since 2×5481000² = 60082722000000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 188986 + ... + 189014.

It is an arithmetic number, because the mean of its divisors is an integer number (87750).

Almost surely, 2^5481000 is an apocalyptic number.

5481000 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5481000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11232000).

5481000 is an abundant number, since it is smaller than the sum of its proper divisors (16983000).

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

5481000 is a wasteful number, since it uses less digits than its factorization.

5481000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66 (or 46 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 18.

The square root of 5481000 is about 2341.1535618152. The cubic root of 5481000 is about 176.3139197763.

Adding to 5481000 its reverse (1845), we get a palindrome (5482845).

The spelling of 5481000 in words is "five million, four hundred eighty-one thousand".