53686913 has 8 divisors (see below), whose sum is σ = 64585920. Its totient is φ = 43595280.

The previous prime is 53686909. The next prime is 53686921. The reversal of 53686913 is 31968635.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 53686913 - 2² = 53686909 is a prime.

It is not an unprimeable number, because it can be changed into a prime (53686013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 201698 + ... + 201963.

It is an arithmetic number, because the mean of its divisors is an integer number (8073240).

Almost surely, 2^53686913 is an apocalyptic number.

It is an amenable number.

53686913 is a deficient number, since it is larger than the sum of its proper divisors (10899007).

53686913 is a wasteful number, since it uses less digits than its factorization.

53686913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 403687.

The product of its digits is 116640, while the sum is 41.

The square root of 53686913 is about 7327.1353884038. The cubic root of 53686913 is about 377.2444080724.

The spelling of 53686913 in words is "fifty-three million, six hundred eighty-six thousand, nine hundred thirteen".