51536533 has 2 divisors, whose sum is σ = 51536534. Its totient is φ = 51536532.

The previous prime is 51536483. The next prime is 51536543. The reversal of 51536533 is 33563515.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 46144849 + 5391684 = 6793^2 + 2322^2 .

It is a cyclic number.

It is not a de Polignac number, because 51536533 - 2⁹ = 51536021 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 51536495 and 51536504.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51536543) 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, 25768266 + 25768267.

It is an arithmetic number, because the mean of its divisors is an integer number (25768267).

Almost surely, 2^51536533 is an apocalyptic number.

It is an amenable number.

51536533 is a deficient number, since it is larger than the sum of its proper divisors (1).

51536533 is an equidigital number, since it uses as much as digits as its factorization.

51536533 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20250, while the sum is 31.

The square root of 51536533 is about 7178.8949706762. The cubic root of 51536533 is about 372.1388972399.

The spelling of 51536533 in words is "fifty-one million, five hundred thirty-six thousand, five hundred thirty-three".