53553613 has 4 divisors (see below), whose sum is σ = 53789760. Its totient is φ = 53317468.

The previous prime is 53553593. The next prime is 53553629. The reversal of 53553613 is 31635535.

It is a happy number.

53553613 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: 31635535 = 5 ⋅6327107.

It is a cyclic number.

It is not a de Polignac number, because 53553613 - 2⁵ = 53553581 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 (53553653) 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, 117733 + ... + 118186.

It is an arithmetic number, because the mean of its divisors is an integer number (13447440).

Almost surely, 2^53553613 is an apocalyptic number.

It is an amenable number.

53553613 is a deficient number, since it is larger than the sum of its proper divisors (236147).

53553613 is a wasteful number, since it uses less digits than its factorization.

53553613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 236146.

The product of its digits is 20250, while the sum is 31.

The square root of 53553613 is about 7318.0334106917. The cubic root of 53553613 is about 376.9319274730.

The spelling of 53553613 in words is "fifty-three million, five hundred fifty-three thousand, six hundred thirteen".