54546209 has 2 divisors, whose sum is σ = 54546210. Its totient is φ = 54546208.

The previous prime is 54546203. The next prime is 54546221. The reversal of 54546209 is 90264545.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 31888609 + 22657600 = 5647^2 + 4760^2 .

It is a cyclic number.

It is not a de Polignac number, because 54546209 - 2²⁴ = 37768993 is a prime.

It is a Chen prime.

It is equal to p_3256757 and since 54546209 and 3256757 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (54546203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27273104 + 27273105.

It is an arithmetic number, because the mean of its divisors is an integer number (27273105).

Almost surely, 2^54546209 is an apocalyptic number.

It is an amenable number.

54546209 is a deficient number, since it is larger than the sum of its proper divisors (1).

54546209 is an equidigital number, since it uses as much as digits as its factorization.

54546209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 43200, while the sum is 35.

The square root of 54546209 is about 7385.5405353975. The cubic root of 54546209 is about 379.2464498911.

The spelling of 54546209 in words is "fifty-four million, five hundred forty-six thousand, two hundred nine".