53684447 has 4 divisors (see below), whose sum is σ = 55135416. Its totient is φ = 52233480.

The previous prime is 53684417. The next prime is 53684459. The reversal of 53684447 is 74448635.

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 53684447 - 2⁶ = 53684383 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 (53684417) 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, 725429 + ... + 725502.

It is an arithmetic number, because the mean of its divisors is an integer number (13783854).

Almost surely, 2^53684447 is an apocalyptic number.

53684447 is a deficient number, since it is larger than the sum of its proper divisors (1450969).

53684447 is a wasteful number, since it uses less digits than its factorization.

53684447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1450968.

The product of its digits is 322560, while the sum is 41.

The square root of 53684447 is about 7326.9671078830. The cubic root of 53684447 is about 377.2386319971.

The spelling of 53684447 in words is "fifty-three million, six hundred eighty-four thousand, four hundred forty-seven".