51286266 has 24 divisors (see below), whose sum is σ = 111256704. Its totient is φ = 17074440.

The previous prime is 51286241. The next prime is 51286267. The reversal of 51286266 is 66268215.

51286266 is a `hidden beast` number, since 5 + 1 + 28 + 626 + 6 = 666.

51286266 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 51286266.

It is not an unprimeable number, because it can be changed into a prime (51286267) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22135 + ... + 24341.

It is an arithmetic number, because the mean of its divisors is an integer number (4635696).

Almost surely, 2^51286266 is an apocalyptic number.

51286266 is an abundant number, since it is smaller than the sum of its proper divisors (59970438).

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

51286266 is a wasteful number, since it uses less digits than its factorization.

51286266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3506 (or 3503 counting only the distinct ones).

The product of its digits is 34560, while the sum is 36.

The square root of 51286266 is about 7161.4430110139. The cubic root of 51286266 is about 371.5355372258.

The spelling of 51286266 in words is "fifty-one million, two hundred eighty-six thousand, two hundred sixty-six".