54287999 has 2 divisors, whose sum is σ = 54288000. Its totient is φ = 54287998.

The previous prime is 54287963. The next prime is 54288007. The reversal of 54287999 is 99978245.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 54287999 - 2¹⁶ = 54222463 is a prime.

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 54287999.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (54287939) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27143999 + 27144000.

It is an arithmetic number, because the mean of its divisors is an integer number (27144000).

Almost surely, 2^54287999 is an apocalyptic number.

54287999 is a deficient number, since it is larger than the sum of its proper divisors (1).

54287999 is an equidigital number, since it uses as much as digits as its factorization.

54287999 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1632960, while the sum is 53.

The square root of 54287999 is about 7368.0390199835. The cubic root of 54287999 is about 378.6470794720.

The spelling of 54287999 in words is "fifty-four million, two hundred eighty-seven thousand, nine hundred ninety-nine".