53206533 has 6 divisors (see below), whose sum is σ = 76853894. Its totient is φ = 35471016.

The previous prime is 53206501. The next prime is 53206577. The reversal of 53206533 is 33560235.

53206533 is a `hidden beast` number, since 5 + 3 + 2 + 0 + 653 + 3 = 666.

It can be written as a sum of positive squares in only one way, i.e., 38713284 + 14493249 = 6222^2 + 3807^2 .

It is not a de Polignac number, because 53206533 - 2⁵ = 53206501 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 53206497 and 53206506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53206133) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2955910 + ... + 2955927.

Almost surely, 2^53206533 is an apocalyptic number.

It is an amenable number.

53206533 is a deficient number, since it is larger than the sum of its proper divisors (23647361).

53206533 is a wasteful number, since it uses less digits than its factorization.

53206533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5911843 (or 5911840 counting only the distinct ones).

The product of its (nonzero) digits is 8100, while the sum is 27.

The square root of 53206533 is about 7294.2808418651. The cubic root of 53206533 is about 376.1158656236.

Adding to 53206533 its reverse (33560235), we get a palindrome (86766768).

The spelling of 53206533 in words is "fifty-three million, two hundred six thousand, five hundred thirty-three".