54643549 has 2 divisors, whose sum is σ = 54643550. Its totient is φ = 54643548.

The previous prime is 54643507. The next prime is 54643573. The reversal of 54643549 is 94534645.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 52099524 + 2544025 = 7218^2 + 1595^2 .

It is a cyclic number.

It is not a de Polignac number, because 54643549 - 2²¹ = 52546397 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (54643579) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27321774 + 27321775.

It is an arithmetic number, because the mean of its divisors is an integer number (27321775).

Almost surely, 2^54643549 is an apocalyptic number.

It is an amenable number.

54643549 is a deficient number, since it is larger than the sum of its proper divisors (1).

54643549 is an equidigital number, since it uses as much as digits as its factorization.

54643549 is an evil number, because the sum of its binary digits is even.

The product of its digits is 259200, while the sum is 40.

The square root of 54643549 is about 7392.1275016060. The cubic root of 54643549 is about 379.4719095675.

The spelling of 54643549 in words is "fifty-four million, six hundred forty-three thousand, five hundred forty-nine".