54449980 has 96 divisors (see below), whose sum is σ = 132765696. Its totient is φ = 18579456.

The previous prime is 54449959. The next prime is 54450001. The reversal of 54449980 is 8994445.

It is an interprime number because it is at equal distance from previous prime (54449959) and next prime (54450001).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 428677 + ... + 428803.

It is an arithmetic number, because the mean of its divisors is an integer number (1382976).

Almost surely, 2^54449980 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 54449980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (66382848).

54449980 is an abundant number, since it is smaller than the sum of its proper divisors (78315716).

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

54449980 is a wasteful number, since it uses less digits than its factorization.

54449980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 263 (or 261 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 43.

The square root of 54449980 is about 7379.0229705565. The cubic root of 54449980 is about 379.0232997142.

The spelling of 54449980 in words is "fifty-four million, four hundred forty-nine thousand, nine hundred eighty".