51965633 has 2 divisors, whose sum is σ = 51965634. Its totient is φ = 51965632.

The previous prime is 51965621. The next prime is 51965677. The reversal of 51965633 is 33656915.

51965633 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28858384 + 23107249 = 5372^2 + 4807^2 .

It is a cyclic number.

It is not a de Polignac number, because 51965633 - 2⁶ = 51965569 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (51965603) 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, 25982816 + 25982817.

It is an arithmetic number, because the mean of its divisors is an integer number (25982817).

Almost surely, 2^51965633 is an apocalyptic number.

It is an amenable number.

51965633 is a deficient number, since it is larger than the sum of its proper divisors (1).

51965633 is an equidigital number, since it uses as much as digits as its factorization.

51965633 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 72900, while the sum is 38.

The square root of 51965633 is about 7208.7192343717. The cubic root of 51965633 is about 373.1688698609.

The spelling of 51965633 in words is "fifty-one million, nine hundred sixty-five thousand, six hundred thirty-three".