51965222 has 4 divisors (see below), whose sum is σ = 77947836. Its totient is φ = 25982610.

The previous prime is 51965219. The next prime is 51965227. The reversal of 51965222 is 22256915.

51965222 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51965227) 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 as a sum of consecutive naturals, namely, 12991304 + ... + 12991307.

It is an arithmetic number, because the mean of its divisors is an integer number (19486959).

Almost surely, 2^51965222 is an apocalyptic number.

51965222 is a deficient number, since it is larger than the sum of its proper divisors (25982614).

51965222 is a wasteful number, since it uses less digits than its factorization.

51965222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25982613.

The product of its digits is 10800, while the sum is 32.

The square root of 51965222 is about 7208.6907271709. The cubic root of 51965222 is about 373.1678860517.

The spelling of 51965222 in words is "fifty-one million, nine hundred sixty-five thousand, two hundred twenty-two".