54579209 has 2 divisors, whose sum is σ = 54579210. Its totient is φ = 54579208.

The previous prime is 54579193. The next prime is 54579221. The reversal of 54579209 is 90297545.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 53071225 + 1507984 = 7285^2 + 1228^2 .

It is a cyclic number.

It is not a de Polignac number, because 54579209 - 2⁴ = 54579193 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (54570209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27289604 + 27289605.

It is an arithmetic number, because the mean of its divisors is an integer number (27289605).

Almost surely, 2^54579209 is an apocalyptic number.

It is an amenable number.

54579209 is a deficient number, since it is larger than the sum of its proper divisors (1).

54579209 is an equidigital number, since it uses as much as digits as its factorization.

54579209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 113400, while the sum is 41.

The square root of 54579209 is about 7387.7742927082. The cubic root of 54579209 is about 379.3229147825.

The spelling of 54579209 in words is "fifty-four million, five hundred seventy-nine thousand, two hundred nine".