53923687 has 4 divisors (see below), whose sum is σ = 54046960. Its totient is φ = 53800416.

The previous prime is 53923603. The next prime is 53923697. The reversal of 53923687 is 78632935.

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 53923687 - 2⁷ = 53923559 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 (53923697) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 60978 + ... + 61855.

It is an arithmetic number, because the mean of its divisors is an integer number (13511740).

Almost surely, 2^53923687 is an apocalyptic number.

53923687 is a deficient number, since it is larger than the sum of its proper divisors (123273).

53923687 is a wasteful number, since it uses less digits than its factorization.

53923687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123272.

The product of its digits is 272160, while the sum is 43.

The square root of 53923687 is about 7343.2749505925. The cubic root of 53923687 is about 377.7981785183.

The spelling of 53923687 in words is "fifty-three million, nine hundred twenty-three thousand, six hundred eighty-seven".