54047247 has 4 divisors (see below), whose sum is σ = 72063000. Its totient is φ = 36031496.

The previous prime is 54047239. The next prime is 54047249. The reversal of 54047247 is 74274045.

54047247 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 54047247 - 2³ = 54047239 is a prime.

It is a super-2 number, since 2×54047247² = 5842209816558018, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54047249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9007872 + ... + 9007877.

It is an arithmetic number, because the mean of its divisors is an integer number (18015750).

Almost surely, 2^54047247 is an apocalyptic number.

54047247 is a deficient number, since it is larger than the sum of its proper divisors (18015753).

54047247 is a wasteful number, since it uses less digits than its factorization.

54047247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18015752.

The product of its (nonzero) digits is 31360, while the sum is 33.

The square root of 54047247 is about 7351.6832766381. The cubic root of 54047247 is about 378.0865189262.

The spelling of 54047247 in words is "fifty-four million, forty-seven thousand, two hundred forty-seven".