54218069 has 2 divisors, whose sum is σ = 54218070. Its totient is φ = 54218068.

The previous prime is 54218057. The next prime is 54218159. The reversal of 54218069 is 96081245.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 39853969 + 14364100 = 6313^2 + 3790^2 .

It is a cyclic number.

It is not a de Polignac number, because 54218069 - 2²⁴ = 37440853 is a prime.

It is a super-3 number, since 3×54218069³ (a number of 24 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (54218009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27109034 + 27109035.

It is an arithmetic number, because the mean of its divisors is an integer number (27109035).

Almost surely, 2^54218069 is an apocalyptic number.

It is an amenable number.

54218069 is a deficient number, since it is larger than the sum of its proper divisors (1).

54218069 is an equidigital number, since it uses as much as digits as its factorization.

54218069 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17280, while the sum is 35.

The square root of 54218069 is about 7363.2919947534. The cubic root of 54218069 is about 378.4844273925.

The spelling of 54218069 in words is "fifty-four million, two hundred eighteen thousand, sixty-nine".