55472256 has 128 divisors (see below), whose sum is σ = 187190400. Its totient is φ = 15842304.

The previous prime is 55472243. The next prime is 55472257. The reversal of 55472256 is 65227455.

It is a tau number, because it is divible by the number of its divisors (128).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 55472256.

It is not an unprimeable number, because it can be changed into a prime (55472257) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23046 + ... + 25338.

It is an arithmetic number, because the mean of its divisors is an integer number (1462425).

Almost surely, 2^55472256 is an apocalyptic number.

55472256 is a gapful number since it is divisible by the number (56) 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 55472256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (93595200).

55472256 is an abundant number, since it is smaller than the sum of its proper divisors (131718144).

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

55472256 is a wasteful number, since it uses less digits than its factorization.

55472256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2323 (or 2305 counting only the distinct ones).

The product of its digits is 84000, while the sum is 36.

The square root of 55472256 is about 7447.9699247513. The cubic root of 55472256 is about 381.3806104141.

The spelling of 55472256 in words is "fifty-five million, four hundred seventy-two thousand, two hundred fifty-six".