54570209 has 2 divisors, whose sum is σ = 54570210. Its totient is φ = 54570208.

The previous prime is 54570179. The next prime is 54570247. The reversal of 54570209 is 90207545.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 47128225 + 7441984 = 6865^2 + 2728^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-54570209 is a prime.

It is a super-4 number, since 4×54570209⁴ (a number of 32 digits) contains 4444 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (54570409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27285104 + 27285105.

It is an arithmetic number, because the mean of its divisors is an integer number (27285105).

Almost surely, 2^54570209 is an apocalyptic number.

It is an amenable number.

54570209 is a deficient number, since it is larger than the sum of its proper divisors (1).

54570209 is an equidigital number, since it uses as much as digits as its factorization.

54570209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12600, while the sum is 32.

The square root of 54570209 is about 7387.1651531558. The cubic root of 54570209 is about 379.3020637786.

The spelling of 54570209 in words is "fifty-four million, five hundred seventy thousand, two hundred nine".