53503533 has 6 divisors (see below), whose sum is σ = 77282894. Its totient is φ = 35669016.

The previous prime is 53503529. The next prime is 53503603. The reversal of 53503533 is 33530535.

It can be written as a sum of positive squares in only one way, i.e., 39463524 + 14040009 = 6282^2 + 3747^2 .

It is not a de Polignac number, because 53503533 - 2² = 53503529 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 53503497 and 53503506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53503523) 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, 2972410 + ... + 2972427.

Almost surely, 2^53503533 is an apocalyptic number.

It is an amenable number.

53503533 is a deficient number, since it is larger than the sum of its proper divisors (23779361).

53503533 is a wasteful number, since it uses less digits than its factorization.

53503533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5944843 (or 5944840 counting only the distinct ones).

The product of its (nonzero) digits is 10125, while the sum is 27.

The square root of 53503533 is about 7314.6109260849. The cubic root of 53503533 is about 376.8143964167.

The spelling of 53503533 in words is "fifty-three million, five hundred three thousand, five hundred thirty-three".