55272212 has 6 divisors (see below), whose sum is σ = 96726378. Its totient is φ = 27636104.

The previous prime is 55272199. The next prime is 55272221. The reversal of 55272212 is 21227255.

It can be written as a sum of positive squares in only one way, i.e., 55145476 + 126736 = 7426^2 + 356^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6909023 + ... + 6909030.

It is an arithmetic number, because the mean of its divisors is an integer number (16121063).

Almost surely, 2^55272212 is an apocalyptic number.

It is an amenable number.

55272212 is a deficient number, since it is larger than the sum of its proper divisors (41454166).

55272212 is a wasteful number, since it uses less digits than its factorization.

55272212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13818057 (or 13818055 counting only the distinct ones).

The product of its digits is 2800, while the sum is 26.

The square root of 55272212 is about 7434.5283643282. The cubic root of 55272212 is about 380.9216134209.

Adding to 55272212 its reverse (21227255), we get a palindrome (76499467).

The spelling of 55272212 in words is "fifty-five million, two hundred seventy-two thousand, two hundred twelve".