54825209 has 2 divisors, whose sum is σ = 54825210. Its totient is φ = 54825208.

The previous prime is 54825193. The next prime is 54825247. The reversal of 54825209 is 90252845.

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., 48930025 + 5895184 = 6995^2 + 2428^2 .

It is a cyclic number.

It is not a de Polignac number, because 54825209 - 2⁴ = 54825193 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (54825259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27412604 + 27412605.

It is an arithmetic number, because the mean of its divisors is an integer number (27412605).

Almost surely, 2^54825209 is an apocalyptic number.

It is an amenable number.

54825209 is a deficient number, since it is larger than the sum of its proper divisors (1).

54825209 is an equidigital number, since it uses as much as digits as its factorization.

54825209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 28800, while the sum is 35.

The square root of 54825209 is about 7404.4047026078. The cubic root of 54825209 is about 379.8919568183.

The spelling of 54825209 in words is "fifty-four million, eight hundred twenty-five thousand, two hundred nine".