53820047 has 8 divisors (see below), whose sum is σ = 55245696. Its totient is φ = 52402392.

The previous prime is 53820043. The next prime is 53820049. The reversal of 53820047 is 74002835.

It is a happy number.

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 53820047 - 2² = 53820043 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 (53820043) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13118 + ... + 16724.

It is an arithmetic number, because the mean of its divisors is an integer number (6905712).

Almost surely, 2^53820047 is an apocalyptic number.

53820047 is a deficient number, since it is larger than the sum of its proper divisors (1425649).

53820047 is a wasteful number, since it uses less digits than its factorization.

53820047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3997.

The product of its (nonzero) digits is 6720, while the sum is 29.

The square root of 53820047 is about 7336.2147596700. The cubic root of 53820047 is about 377.5559836858. Note that the first 3 decimals are identical.

The spelling of 53820047 in words is "fifty-three million, eight hundred twenty thousand, forty-seven".