54545009 has 2 divisors, whose sum is σ = 54545010. Its totient is φ = 54545008.

The previous prime is 54544981. The next prime is 54545033. The reversal of 54545009 is 90054545.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 53949025 + 595984 = 7345^2 + 772^2 .

It is a cyclic number.

It is not a de Polignac number, because 54545009 - 2¹⁶ = 54479473 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 (54545209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27272504 + 27272505.

It is an arithmetic number, because the mean of its divisors is an integer number (27272505).

Almost surely, 2^54545009 is an apocalyptic number.

It is an amenable number.

54545009 is a deficient number, since it is larger than the sum of its proper divisors (1).

54545009 is an equidigital number, since it uses as much as digits as its factorization.

54545009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18000, while the sum is 32.

The square root of 54545009 is about 7385.4592951285. The cubic root of 54545009 is about 379.2436687686.

It can be divided in two parts, 545 and 45009, that added together give a palindrome (45554).

The spelling of 54545009 in words is "fifty-four million, five hundred forty-five thousand, nine".