53207447 has 4 divisors (see below), whose sum is σ = 54001656. Its totient is φ = 52413240.

The previous prime is 53207423. The next prime is 53207459. The reversal of 53207447 is 74470235.

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 53207447 - 2¹⁰ = 53206423 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 (53207477) 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, 397004 + ... + 397137.

It is an arithmetic number, because the mean of its divisors is an integer number (13500414).

Almost surely, 2^53207447 is an apocalyptic number.

53207447 is a deficient number, since it is larger than the sum of its proper divisors (794209).

53207447 is an equidigital number, since it uses as much as digits as its factorization.

53207447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 794208.

The product of its (nonzero) digits is 23520, while the sum is 32.

The square root of 53207447 is about 7294.3434934201. The cubic root of 53207447 is about 376.1180192936.

The spelling of 53207447 in words is "fifty-three million, two hundred seven thousand, four hundred forty-seven".