51211366 has 8 divisors (see below), whose sum is σ = 78603624. Its totient is φ = 25010160.

The previous prime is 51211339. The next prime is 51211373. The reversal of 51211366 is 66311215.

51211366 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 51211366.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 297655 + ... + 297826.

It is an arithmetic number, because the mean of its divisors is an integer number (9825453).

Almost surely, 2^51211366 is an apocalyptic number.

51211366 is a deficient number, since it is larger than the sum of its proper divisors (27392258).

51211366 is a wasteful number, since it uses less digits than its factorization.

51211366 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 595526.

The product of its digits is 1080, while the sum is 25.

The square root of 51211366 is about 7156.2117073211. The cubic root of 51211366 is about 371.3545818949.

The spelling of 51211366 in words is "fifty-one million, two hundred eleven thousand, three hundred sixty-six".