54187139 has 2 divisors, whose sum is σ = 54187140. Its totient is φ = 54187138.

The previous prime is 54187123. The next prime is 54187151. The reversal of 54187139 is 93178145.

54187139 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 54187139 - 2⁴ = 54187123 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (54187169) 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 as a sum of consecutive naturals, namely, 27093569 + 27093570.

It is an arithmetic number, because the mean of its divisors is an integer number (27093570).

Almost surely, 2^54187139 is an apocalyptic number.

54187139 is a deficient number, since it is larger than the sum of its proper divisors (1).

54187139 is an equidigital number, since it uses as much as digits as its factorization.

54187139 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 30240, while the sum is 38.

The square root of 54187139 is about 7361.1914117213. The cubic root of 54187139 is about 378.4124418574.

The spelling of 54187139 in words is "fifty-four million, one hundred eighty-seven thousand, one hundred thirty-nine".