53893687 has 4 divisors (see below), whose sum is σ = 55752120. Its totient is φ = 52035256.

The previous prime is 53893681. The next prime is 53893691. The reversal of 53893687 is 78639835.

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 53893687 - 2⁷ = 53893559 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 53893687.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53893681) 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, 929173 + ... + 929230.

It is an arithmetic number, because the mean of its divisors is an integer number (13938030).

Almost surely, 2^53893687 is an apocalyptic number.

53893687 is a deficient number, since it is larger than the sum of its proper divisors (1858433).

53893687 is a wasteful number, since it uses less digits than its factorization.

53893687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1858432.

The product of its digits is 1088640, while the sum is 49.

The square root of 53893687 is about 7341.2319810778. The cubic root of 53893687 is about 377.7281038845.

The spelling of 53893687 in words is "fifty-three million, eight hundred ninety-three thousand, six hundred eighty-seven".