51066212 has 6 divisors (see below), whose sum is σ = 89365878. Its totient is φ = 25533104.

The previous prime is 51066193. The next prime is 51066217. The reversal of 51066212 is 21266015.

It can be written as a sum of positive squares in only one way, i.e., 48804196 + 2262016 = 6986^2 + 1504^2 .

It is not an unprimeable number, because it can be changed into a prime (51066217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6383273 + ... + 6383280.

It is an arithmetic number, because the mean of its divisors is an integer number (14894313).

Almost surely, 2^51066212 is an apocalyptic number.

It is an amenable number.

51066212 is a deficient number, since it is larger than the sum of its proper divisors (38299666).

51066212 is a wasteful number, since it uses less digits than its factorization.

51066212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12766557 (or 12766555 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 51066212 is about 7146.0626921403. The cubic root of 51066212 is about 371.0033928534.

The spelling of 51066212 in words is "fifty-one million, sixty-six thousand, two hundred twelve".