51445212 has 48 divisors (see below), whose sum is σ = 147743232. Its totient is φ = 13567680.

The previous prime is 51445193. The next prime is 51445223. The reversal of 51445212 is 21254415.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22464 + ... + 24647.

It is an arithmetic number, because the mean of its divisors is an integer number (3077984).

Almost surely, 2^51445212 is an apocalyptic number.

51445212 is a gapful number since it is divisible by the number (52) formed by its first and last digit.

It is an amenable number.

51445212 is an abundant number, since it is smaller than the sum of its proper divisors (96298020).

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

51445212 is a wasteful number, since it uses less digits than its factorization.

51445212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47138 (or 47136 counting only the distinct ones).

The product of its digits is 1600, while the sum is 24.

The square root of 51445212 is about 7172.5317705814. The cubic root of 51445212 is about 371.9189614201.

Adding to 51445212 its reverse (21254415), we get a palindrome (72699627).

The spelling of 51445212 in words is "fifty-one million, four hundred forty-five thousand, two hundred twelve".