55865472 has 192 divisors, whose sum is σ = 174101760. Its totient is φ = 15759360.

The previous prime is 55865461. The next prime is 55865531. The reversal of 55865472 is 27456855.

It is a tau number, because it is divible by the number of its divisors (192).

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, 1802097 + ... + 1802127.

It is an arithmetic number, because the mean of its divisors is an integer number (906780).

Almost surely, 2^55865472 is an apocalyptic number.

55865472 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 55865472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (87050880).

55865472 is an abundant number, since it is smaller than the sum of its proper divisors (118236288).

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

55865472 is a wasteful number, since it uses less digits than its factorization.

55865472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99 (or 68 counting only the distinct ones).

The product of its digits is 336000, while the sum is 42.

The square root of 55865472 is about 7474.3208387117. The cubic root of 55865472 is about 382.2796304212.

The spelling of 55865472 in words is "fifty-five million, eight hundred sixty-five thousand, four hundred seventy-two".