54051209 has 2 divisors, whose sum is σ = 54051210. Its totient is φ = 54051208.

The previous prime is 54051187. The next prime is 54051227. The reversal of 54051209 is 90215045.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 31393609 + 22657600 = 5603^2 + 4760^2 .

It is a cyclic number.

It is not a de Polignac number, because 54051209 - 2²⁴ = 37273993 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (54051299) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27025604 + 27025605.

It is an arithmetic number, because the mean of its divisors is an integer number (27025605).

Almost surely, 2^54051209 is an apocalyptic number.

It is an amenable number.

54051209 is a deficient number, since it is larger than the sum of its proper divisors (1).

54051209 is an equidigital number, since it uses as much as digits as its factorization.

54051209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1800, while the sum is 26.

The square root of 54051209 is about 7351.9527337980. The cubic root of 54051209 is about 378.0957573998.

The spelling of 54051209 in words is "fifty-four million, fifty-one thousand, two hundred nine".