53805047 has 4 divisors (see below), whose sum is σ = 53933880. Its totient is φ = 53676216.

The previous prime is 53805029. The next prime is 53805049. The reversal of 53805047 is 74050835.

It is a happy number.

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 53805047 - 2⁸ = 53804791 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 (53805049) 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, 63788 + ... + 64625.

It is an arithmetic number, because the mean of its divisors is an integer number (13483470).

Almost surely, 2^53805047 is an apocalyptic number.

53805047 is a deficient number, since it is larger than the sum of its proper divisors (128833).

53805047 is a wasteful number, since it uses less digits than its factorization.

53805047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128832.

The product of its (nonzero) digits is 16800, while the sum is 32.

The square root of 53805047 is about 7335.1923628491. The cubic root of 53805047 is about 377.5209046506.

The spelling of 53805047 in words is "fifty-three million, eight hundred five thousand, forty-seven".