55565472 has 48 divisors (see below), whose sum is σ = 146664000. Its totient is φ = 18419712.

The previous prime is 55565467. The next prime is 55565473. The reversal of 55565472 is 27456555.

It is a tau number, because it is divible by the number of its divisors (48).

It is a self number, because there is not a number n which added to its sum of digits gives 55565472.

It is not an unprimeable number, because it can be changed into a prime (55565473) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17029 + ... + 20027.

It is an arithmetic number, because the mean of its divisors is an integer number (3055500).

Almost surely, 2^55565472 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 55565472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (73332000).

55565472 is an abundant number, since it is smaller than the sum of its proper divisors (91098528).

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

55565472 is a wasteful number, since it uses less digits than its factorization.

55565472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3205 (or 3197 counting only the distinct ones).

The product of its digits is 210000, while the sum is 39.

The square root of 55565472 is about 7454.2251106336. The cubic root of 55565472 is about 381.5941158242.

The spelling of 55565472 in words is "fifty-five million, five hundred sixty-five thousand, four hundred seventy-two".