51055212 has 24 divisors (see below), whose sum is σ = 128292976. Its totient is φ = 15709248.

The previous prime is 51055201. The next prime is 51055217. The reversal of 51055212 is 21255015.

It is not an unprimeable number, because it can be changed into a prime (51055217) 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 7 ways as a sum of consecutive naturals, for example, 163483 + ... + 163794.

Almost surely, 2^51055212 is an apocalyptic number.

51055212 is a gapful number since it is divisible by the number (52) formed by its first and last digit.

It is an amenable number.

51055212 is an abundant number, since it is smaller than the sum of its proper divisors (77237764).

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

51055212 is a wasteful number, since it uses less digits than its factorization.

51055212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 327297 (or 327295 counting only the distinct ones).

The product of its (nonzero) digits is 500, while the sum is 21.

The square root of 51055212 is about 7145.2929960919. The cubic root of 51055212 is about 370.9767520784.

The spelling of 51055212 in words is "fifty-one million, fifty-five thousand, two hundred twelve".