53217733 has 2 divisors, whose sum is σ = 53217734. Its totient is φ = 53217732.

The previous prime is 53217721. The next prime is 53217737. The reversal of 53217733 is 33771235.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 39917124 + 13300609 = 6318^2 + 3647^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-53217733 is a prime.

It is equal to p_3182287 and since 53217733 and 3182287 have the same sum of digits, it is a Honaker prime.

It is a junction number, because it is equal to n+sod(n) for n = 53217695 and 53217704.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53217737) 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, 26608866 + 26608867.

It is an arithmetic number, because the mean of its divisors is an integer number (26608867).

Almost surely, 2^53217733 is an apocalyptic number.

It is an amenable number.

53217733 is a deficient number, since it is larger than the sum of its proper divisors (1).

53217733 is an equidigital number, since it uses as much as digits as its factorization.

53217733 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13230, while the sum is 31.

The square root of 53217733 is about 7295.0485262265. The cubic root of 53217733 is about 376.1422546271.

Adding to 53217733 its reverse (33771235), we get a palindrome (86988968).

The spelling of 53217733 in words is "fifty-three million, two hundred seventeen thousand, seven hundred thirty-three".