54511999 has 2 divisors, whose sum is σ = 54512000. Its totient is φ = 54511998.

The previous prime is 54511987. The next prime is 54512011. The reversal of 54511999 is 99911545.

It is a balanced prime because it is at equal distance from previous prime (54511987) and next prime (54512011).

It is a cyclic number.

It is not a de Polignac number, because 54511999 - 2¹³ = 54503807 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (54511939) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27255999 + 27256000.

It is an arithmetic number, because the mean of its divisors is an integer number (27256000).

Almost surely, 2^54511999 is an apocalyptic number.

54511999 is a deficient number, since it is larger than the sum of its proper divisors (1).

54511999 is an equidigital number, since it uses as much as digits as its factorization.

54511999 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 72900, while the sum is 43.

The square root of 54511999 is about 7383.2241602162. The cubic root of 54511999 is about 379.1671487227.

It can be divided in two parts, 545 and 11999, that added together give a square (12544 = 112²).

The spelling of 54511999 in words is "fifty-four million, five hundred eleven thousand, nine hundred ninety-nine".