54609809 has 2 divisors, whose sum is σ = 54609810. Its totient is φ = 54609808.

The previous prime is 54609803. The next prime is 54609833. The reversal of 54609809 is 90890645.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 46881409 + 7728400 = 6847^2 + 2780^2 .

It is a cyclic number.

It is not a de Polignac number, because 54609809 - 2¹² = 54605713 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (54609803) 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, 27304904 + 27304905.

It is an arithmetic number, because the mean of its divisors is an integer number (27304905).

Almost surely, 2^54609809 is an apocalyptic number.

It is an amenable number.

54609809 is a deficient number, since it is larger than the sum of its proper divisors (1).

54609809 is an equidigital number, since it uses as much as digits as its factorization.

54609809 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 77760, while the sum is 41.

The square root of 54609809 is about 7389.8449916084. The cubic root of 54609809 is about 379.3937910549.

The spelling of 54609809 in words is "fifty-four million, six hundred nine thousand, eight hundred nine".