54545909569 has 2 divisors, whose sum is σ = 54545909570. Its totient is φ = 54545909568.

The previous prime is 54545909507. The next prime is 54545909591. The reversal of 54545909569 is 96590954545.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 51374755600 + 3171153969 = 226660^2 + 56313^2 .

It is a cyclic number.

It is not a de Polignac number, because 54545909569 - 2³¹ = 52398425921 is a prime.

It is a super-2 number, since 2×54545909569² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (54545909269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27272954784 + 27272954785.

It is an arithmetic number, because the mean of its divisors is an integer number (27272954785).

Almost surely, 2^54545909569 is an apocalyptic number.

It is an amenable number.

54545909569 is a deficient number, since it is larger than the sum of its proper divisors (1).

54545909569 is an equidigital number, since it uses as much as digits as its factorization.

54545909569 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 43740000, while the sum is 61.

The spelling of 54545909569 in words is "fifty-four billion, five hundred forty-five million, nine hundred nine thousand, five hundred sixty-nine".