53047817 has 4 divisors (see below), whose sum is σ = 53062656. Its totient is φ = 53032980.

The previous prime is 53047811. The next prime is 53047831. The reversal of 53047817 is 71874035.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, 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 53047817 - 2⁴ = 53047801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53047811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1592 + ... + 10422.

It is an arithmetic number, because the mean of its divisors is an integer number (13265664).

Almost surely, 2^53047817 is an apocalyptic number.

It is an amenable number.

53047817 is a deficient number, since it is larger than the sum of its proper divisors (14839).

53047817 is an equidigital number, since it uses as much as digits as its factorization.

53047817 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14838.

The product of its (nonzero) digits is 23520, while the sum is 35.

The square root of 53047817 is about 7283.3932339261. The cubic root of 53047817 is about 375.7415064451.

The spelling of 53047817 in words is "fifty-three million, forty-seven thousand, eight hundred seventeen".