51667212 has 24 divisors (see below), whose sum is σ = 124714800. Its totient is φ = 16628416.

The previous prime is 51667211. The next prime is 51667247. The reversal of 51667212 is 21276615.

It is a self number, because there is not a number n which added to its sum of digits gives 51667212.

It is not an unprimeable number, because it can be changed into a prime (51667211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 73887 + ... + 74582.

It is an arithmetic number, because the mean of its divisors is an integer number (5196450).

Almost surely, 2^51667212 is an apocalyptic number.

It is an amenable number.

51667212 is an abundant number, since it is smaller than the sum of its proper divisors (73047588).

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

51667212 is a wasteful number, since it uses less digits than its factorization.

51667212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148505 (or 148503 counting only the distinct ones).

The product of its digits is 5040, while the sum is 30.

The square root of 51667212 is about 7187.9908180242. The cubic root of 51667212 is about 372.4531706967.

The spelling of 51667212 in words is "fifty-one million, six hundred sixty-seven thousand, two hundred twelve".