53513563 has 4 divisors (see below), whose sum is σ = 53651520. Its totient is φ = 53375608.

The previous prime is 53513561. The next prime is 53513567. The reversal of 53513563 is 36531535.

It is a happy number.

53513563 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.

It is a cyclic number.

It is not a de Polignac number, because 53513563 - 2¹ = 53513561 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53513561) 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, 68395 + ... + 69172.

It is an arithmetic number, because the mean of its divisors is an integer number (13412880).

Almost surely, 2^53513563 is an apocalyptic number.

53513563 is a deficient number, since it is larger than the sum of its proper divisors (137957).

53513563 is a wasteful number, since it uses less digits than its factorization.

53513563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137956.

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

The square root of 53513563 is about 7315.2965080029. The cubic root of 53513563 is about 376.8379413556.

The spelling of 53513563 in words is "fifty-three million, five hundred thirteen thousand, five hundred sixty-three".