54991872 has 264 divisors, whose sum is σ = 187767216. Its totient is φ = 15925248.

The previous prime is 54991813. The next prime is 54991891. The reversal of 54991872 is 27819945.

Its product of digits (181440) is a multiple of the sum of its prime divisors (35).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3234808 + ... + 3234824.

Almost surely, 2^54991872 is an apocalyptic number.

54991872 is a gapful number since it is divisible by the number (52) 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 54991872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (93883608).

54991872 is an abundant number, since it is smaller than the sum of its proper divisors (132775344).

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

54991872 is a wasteful number, since it uses less digits than its factorization.

54991872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65 (or 35 counting only the distinct ones).

The product of its digits is 181440, while the sum is 45.

The square root of 54991872 is about 7415.6504772002. The cubic root of 54991872 is about 380.2765115789.

The spelling of 54991872 in words is "fifty-four million, nine hundred ninety-one thousand, eight hundred seventy-two".