55725472 has 96 divisors (see below), whose sum is σ = 127370880. Its totient is φ = 23761920.

The previous prime is 55725451. The next prime is 55725491. The reversal of 55725472 is 27452755.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 540973 + ... + 541075.

It is an arithmetic number, because the mean of its divisors is an integer number (1326780).

Almost surely, 2^55725472 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 55725472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (63685440).

55725472 is an abundant number, since it is smaller than the sum of its proper divisors (71645408).

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

55725472 is a wasteful number, since it uses less digits than its factorization.

55725472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206 (or 198 counting only the distinct ones).

The product of its digits is 98000, while the sum is 37.

The square root of 55725472 is about 7464.9495644646. The cubic root of 55725472 is about 381.9600298082.

It can be divided in two parts, 55 and 725472, that added together give a palindrome (725527).

The spelling of 55725472 in words is "fifty-five million, seven hundred twenty-five thousand, four hundred seventy-two".