53505253 has 4 divisors (see below), whose sum is σ = 53523360. Its totient is φ = 53487148.

The previous prime is 53505251. The next prime is 53505259. The reversal of 53505253 is 35250535.

53505253 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 35250535 = 5 ⋅7050107.

It is a cyclic number.

It is not a de Polignac number, because 53505253 - 2¹ = 53505251 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53505251) 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 in 3 ways as a sum of consecutive naturals, for example, 3475 + ... + 10912.

It is an arithmetic number, because the mean of its divisors is an integer number (13380840).

Almost surely, 2^53505253 is an apocalyptic number.

It is an amenable number.

53505253 is a deficient number, since it is larger than the sum of its proper divisors (18107).

53505253 is a wasteful number, since it uses less digits than its factorization.

53505253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18106.

The product of its (nonzero) digits is 11250, while the sum is 28.

The square root of 53505253 is about 7314.7284980374. The cubic root of 53505253 is about 376.8184342424.

Adding to 53505253 its reverse (35250535), we get a palindrome (88755788).

The spelling of 53505253 in words is "fifty-three million, five hundred five thousand, two hundred fifty-three".