54187387 has 2 divisors, whose sum is σ = 54187388. Its totient is φ = 54187386.

The previous prime is 54187339. The next prime is 54187391. The reversal of 54187387 is 78378145.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-54187387 is a prime.

It is not a weakly prime, because it can be changed into another prime (54187307) 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, 27093693 + 27093694.

It is an arithmetic number, because the mean of its divisors is an integer number (27093694).

Almost surely, 2^54187387 is an apocalyptic number.

54187387 is a deficient number, since it is larger than the sum of its proper divisors (1).

54187387 is an equidigital number, since it uses as much as digits as its factorization.

54187387 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 188160, while the sum is 43.

The square root of 54187387 is about 7361.2082568013. The cubic root of 54187387 is about 378.4130191539.

The spelling of 54187387 in words is "fifty-four million, one hundred eighty-seven thousand, three hundred eighty-seven".