54187247 has 2 divisors, whose sum is σ = 54187248. Its totient is φ = 54187246.

The previous prime is 54187213. The next prime is 54187249. The reversal of 54187247 is 74278145.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 54187247 - 2¹⁸ = 53925103 is a prime.

Together with 54187249, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 54187247.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (54187249) 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 as a sum of consecutive naturals, namely, 27093623 + 27093624.

It is an arithmetic number, because the mean of its divisors is an integer number (27093624).

Almost surely, 2^54187247 is an apocalyptic number.

54187247 is a deficient number, since it is larger than the sum of its proper divisors (1).

54187247 is an equidigital number, since it uses as much as digits as its factorization.

54187247 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 62720, while the sum is 38.

The square root of 54187247 is about 7361.1987474867. The cubic root of 54187247 is about 378.4126932609.

The spelling of 54187247 in words is "fifty-four million, one hundred eighty-seven thousand, two hundred forty-seven".