54725787209 has 2 divisors, whose sum is σ = 54725787210. Its totient is φ = 54725787208.

The previous prime is 54725787199. The next prime is 54725787223. The reversal of 54725787209 is 90278752745.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 47459929609 + 7265857600 = 217853^2 + 85240^2 .

It is a cyclic number.

It is not a de Polignac number, because 54725787209 - 2¹² = 54725783113 is a prime.

It is not a weakly prime, because it can be changed into another prime (54725787299) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27362893604 + 27362893605.

It is an arithmetic number, because the mean of its divisors is an integer number (27362893605).

Almost surely, 2^54725787209 is an apocalyptic number.

It is an amenable number.

54725787209 is a deficient number, since it is larger than the sum of its proper divisors (1).

54725787209 is an equidigital number, since it uses as much as digits as its factorization.

54725787209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9878400, while the sum is 56.

The spelling of 54725787209 in words is "fifty-four billion, seven hundred twenty-five million, seven hundred eighty-seven thousand, two hundred nine".