53686403 has 8 divisors (see below), whose sum is σ = 55973808. Its totient is φ = 51446304.

The previous prime is 53686397. The next prime is 53686417. The reversal of 53686403 is 30468635.

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 53686403 - 2⁸ = 53686147 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53686483) 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, 9500 + ... + 14057.

It is an arithmetic number, because the mean of its divisors is an integer number (6996726).

Almost surely, 2^53686403 is an apocalyptic number.

53686403 is a gapful number since it is divisible by the number (53) formed by its first and last digit.

53686403 is the 3917-th centered heptagonal number.

53686403 is a deficient number, since it is larger than the sum of its proper divisors (2287405).

53686403 is a wasteful number, since it uses less digits than its factorization.

53686403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23653.

The product of its (nonzero) digits is 51840, while the sum is 35.

The square root of 53686403 is about 7327.1005861800. The cubic root of 53686403 is about 377.2432135215.

The spelling of 53686403 in words is "fifty-three million, six hundred eighty-six thousand, four hundred three".