55503448 has 128 divisors (see below), whose sum is σ = 145152000. Its totient is φ = 19192320.

The previous prime is 55503443. The next prime is 55503449. The reversal of 55503448 is 84430555.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55503443) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 232113 + ... + 232351.

It is an arithmetic number, because the mean of its divisors is an integer number (1134000).

Almost surely, 2^55503448 is an apocalyptic number.

55503448 is a gapful number since it is divisible by the number (58) 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 55503448, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (72576000).

55503448 is an abundant number, since it is smaller than the sum of its proper divisors (89648552).

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

55503448 is a wasteful number, since it uses less digits than its factorization.

55503448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 305 (or 301 counting only the distinct ones).

The product of its (nonzero) digits is 48000, while the sum is 34.

The square root of 55503448 is about 7450.0636238894. The cubic root of 55503448 is about 381.4520803455.

It can be divided in two parts, 5550 and 3448, that added together give a palindrome (8998).

The spelling of 55503448 in words is "fifty-five million, five hundred three thousand, four hundred forty-eight".