55498209 has 16 divisors (see below), whose sum is σ = 79833600. Its totient is φ = 34091136.

The previous prime is 55498207. The next prime is 55498213. The reversal of 55498209 is 90289455.

It is not a de Polignac number, because 55498209 - 2¹ = 55498207 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (55498207) 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, 30672 + ... + 32430.

It is an arithmetic number, because the mean of its divisors is an integer number (4989600).

Almost surely, 2^55498209 is an apocalyptic number.

It is an amenable number.

55498209 is a deficient number, since it is larger than the sum of its proper divisors (24335391).

55498209 is a wasteful number, since it uses less digits than its factorization.

55498209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2584.

The product of its (nonzero) digits is 129600, while the sum is 42.

The square root of 55498209 is about 7449.7120078564. The cubic root of 55498209 is about 381.4400781462.

The spelling of 55498209 in words is "fifty-five million, four hundred ninety-eight thousand, two hundred nine".