54655209 has 16 divisors (see below), whose sum is σ = 92538240. Its totient is φ = 31231440.

The previous prime is 54655177. The next prime is 54655247. The reversal of 54655209 is 90255645.

It is not a de Polignac number, because 54655209 - 2⁵ = 54655177 is a prime.

It is not an unprimeable number, because it can be changed into a prime (54655109) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 144402 + ... + 144779.

It is an arithmetic number, because the mean of its divisors is an integer number (5783640).

Almost surely, 2^54655209 is an apocalyptic number.

It is an amenable number.

54655209 is a deficient number, since it is larger than the sum of its proper divisors (37883031).

54655209 is a wasteful number, since it uses less digits than its factorization.

54655209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 289197 (or 289191 counting only the distinct ones).

The product of its (nonzero) digits is 54000, while the sum is 36.

The square root of 54655209 is about 7392.9161364106. The cubic root of 54655209 is about 379.4988985892.

It can be divided in two parts, 546 and 55209, that added together give a palindrome (55755).

The spelling of 54655209 in words is "fifty-four million, six hundred fifty-five thousand, two hundred nine".