55255212 has 36 divisors (see below), whose sum is σ = 139904856. Its totient is φ = 18387840.

The previous prime is 55255201. The next prime is 55255217. The reversal of 55255212 is 21255255.

It is a tau number, because it is divible by the number of its divisors (36).

It is not an unprimeable number, because it can be changed into a prime (55255217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 34387 + ... + 35957.

It is an arithmetic number, because the mean of its divisors is an integer number (3886246).

Almost surely, 2^55255212 is an apocalyptic number.

It is an amenable number.

55255212 is an abundant number, since it is smaller than the sum of its proper divisors (84649644).

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

55255212 is a wasteful number, since it uses less digits than its factorization.

55255212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2558 (or 2553 counting only the distinct ones).

The product of its digits is 5000, while the sum is 27.

The square root of 55255212 is about 7433.3849624515. The cubic root of 55255212 is about 380.8825562334.

The spelling of 55255212 in words is "fifty-five million, two hundred fifty-five thousand, two hundred twelve".