53513687 has 4 divisors (see below), whose sum is σ = 53782800. Its totient is φ = 53244576.

The previous prime is 53513627. The next prime is 53513699. The reversal of 53513687 is 78631535.

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 53513687 - 2¹⁰ = 53512663 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 53513687.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53513627) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 134258 + ... + 134655.

It is an arithmetic number, because the mean of its divisors is an integer number (13445700).

Almost surely, 2^53513687 is an apocalyptic number.

53513687 is a deficient number, since it is larger than the sum of its proper divisors (269113).

53513687 is a wasteful number, since it uses less digits than its factorization.

53513687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 269112.

The product of its digits is 75600, while the sum is 38.

The square root of 53513687 is about 7315.3049833893. The cubic root of 53513687 is about 376.8382324212.

The spelling of 53513687 in words is "fifty-three million, five hundred thirteen thousand, six hundred eighty-seven".