53947247 has 4 divisors (see below), whose sum is σ = 53962440. Its totient is φ = 53932056.

The previous prime is 53947193. The next prime is 53947249. The reversal of 53947247 is 74274935.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 53947247 - 2⁶ = 53947183 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 (53947249) 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 3 ways as a sum of consecutive naturals, for example, 893 + ... + 10425.

It is an arithmetic number, because the mean of its divisors is an integer number (13490610).

Almost surely, 2^53947247 is an apocalyptic number.

53947247 is a deficient number, since it is larger than the sum of its proper divisors (15193).

53947247 is an equidigital number, since it uses as much as digits as its factorization.

53947247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15192.

The product of its digits is 211680, while the sum is 41.

The square root of 53947247 is about 7344.8789642853. The cubic root of 53947247 is about 377.8531922459.

The spelling of 53947247 in words is "fifty-three million, nine hundred forty-seven thousand, two hundred forty-seven".