55228472 has 16 divisors (see below), whose sum is σ = 111519240. Its totient is φ = 25490016.

The previous prime is 55228463. The next prime is 55228477. The reversal of 55228472 is 27482255.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55228477) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 265418 + ... + 265625.

Almost surely, 2^55228472 is an apocalyptic number.

55228472 is a gapful number since it is divisible by the number (52) formed by its first and last digit.

It is an amenable number.

55228472 is an abundant number, since it is smaller than the sum of its proper divisors (56290768).

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

55228472 is a wasteful number, since it uses less digits than its factorization.

55228472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 531062 (or 531058 counting only the distinct ones).

The product of its digits is 44800, while the sum is 35.

The square root of 55228472 is about 7431.5861025760. The cubic root of 55228472 is about 380.8211053611.

The spelling of 55228472 in words is "fifty-five million, two hundred twenty-eight thousand, four hundred seventy-two".