53821047 has 8 divisors (see below), whose sum is σ = 82013056. Its totient is φ = 30754872.

The previous prime is 53821003. The next prime is 53821049. The reversal of 53821047 is 74012835.

53821047 is nontrivially palindromic in base 14.

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

It is not a de Polignac number, because 53821047 - 2¹⁵ = 53788279 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 (53821049) 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 7 ways as a sum of consecutive naturals, for example, 1281433 + ... + 1281474.

It is an arithmetic number, because the mean of its divisors is an integer number (10251632).

Almost surely, 2^53821047 is an apocalyptic number.

53821047 is a deficient number, since it is larger than the sum of its proper divisors (28192009).

53821047 is a wasteful number, since it uses less digits than its factorization.

53821047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2562917.

The product of its (nonzero) digits is 6720, while the sum is 30.

The square root of 53821047 is about 7336.2829143920. The cubic root of 53821047 is about 377.5583220564.

The spelling of 53821047 in words is "fifty-three million, eight hundred twenty-one thousand, forty-seven".