55272230 has 32 divisors (see below), whose sum is σ = 107672544. Its totient is φ = 20307456.

The previous prime is 55272227. The next prime is 55272247. The reversal of 55272230 is 3227255.

55272230 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 55272230.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28574 + ... + 30446.

It is an arithmetic number, because the mean of its divisors is an integer number (3364767).

Almost surely, 2^55272230 is an apocalyptic number.

55272230 is a deficient number, since it is larger than the sum of its proper divisors (52400314).

55272230 is a wasteful number, since it uses less digits than its factorization.

55272230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2120.

The product of its (nonzero) digits is 4200, while the sum is 26.

The square root of 55272230 is about 7434.5295748958. The cubic root of 55272230 is about 380.9216547713.

Adding to 55272230 its reverse (3227255), we get a palindrome (58499485).

The spelling of 55272230 in words is "fifty-five million, two hundred seventy-two thousand, two hundred thirty".