53291633 has 2 divisors, whose sum is σ = 53291634. Its totient is φ = 53291632.

The previous prime is 53291611. The next prime is 53291639. The reversal of 53291633 is 33619235.

53291633 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28858384 + 24433249 = 5372^2 + 4943^2 .

It is a cyclic number.

It is not a de Polignac number, because 53291633 - 2⁸ = 53291377 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 53291633.

It is not a weakly prime, because it can be changed into another prime (53291639) 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, 26645816 + 26645817.

It is an arithmetic number, because the mean of its divisors is an integer number (26645817).

Almost surely, 2^53291633 is an apocalyptic number.

It is an amenable number.

53291633 is a deficient number, since it is larger than the sum of its proper divisors (1).

53291633 is an equidigital number, since it uses as much as digits as its factorization.

53291633 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 14580, while the sum is 32.

The square root of 53291633 is about 7300.1118484582. Note that the first 3 decimals coincide. The cubic root of 53291633 is about 376.3162821826.

The spelling of 53291633 in words is "fifty-three million, two hundred ninety-one thousand, six hundred thirty-three".