51566633 has 2 divisors, whose sum is σ = 51566634. Its totient is φ = 51566632.

The previous prime is 51566623. The next prime is 51566639. The reversal of 51566633 is 33666515.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 51308569 + 258064 = 7163^2 + 508^2 .

It is a cyclic number.

It is not a de Polignac number, because 51566633 - 2⁶ = 51566569 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 51566593 and 51566602.

It is not a weakly prime, because it can be changed into another prime (51566639) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25783316 + 25783317.

It is an arithmetic number, because the mean of its divisors is an integer number (25783317).

Almost surely, 2^51566633 is an apocalyptic number.

It is an amenable number.

51566633 is a deficient number, since it is larger than the sum of its proper divisors (1).

51566633 is an equidigital number, since it uses as much as digits as its factorization.

51566633 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 48600, while the sum is 35.

The square root of 51566633 is about 7180.9910875867. The cubic root of 51566633 is about 372.2113325923.

The spelling of 51566633 in words is "fifty-one million, five hundred sixty-six thousand, six hundred thirty-three".