54549569 has 2 divisors, whose sum is σ = 54549570. Its totient is φ = 54549568.

The previous prime is 54549559. The next prime is 54549601. The reversal of 54549569 is 96594545.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 47789569 + 6760000 = 6913^2 + 2600^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-54549569 is a prime.

It is a super-2 number, since 2×54549569² = 5951310956171522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (54549529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27274784 + 27274785.

It is an arithmetic number, because the mean of its divisors is an integer number (27274785).

Almost surely, 2^54549569 is an apocalyptic number.

It is an amenable number.

54549569 is a deficient number, since it is larger than the sum of its proper divisors (1).

54549569 is an equidigital number, since it uses as much as digits as its factorization.

54549569 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 972000, while the sum is 47.

The square root of 54549569 is about 7385.7680033968. The cubic root of 54549569 is about 379.2542368173.

The spelling of 54549569 in words is "fifty-four million, five hundred forty-nine thousand, five hundred sixty-nine".