55565449 has 4 divisors (see below), whose sum is σ = 56476420. Its totient is φ = 54654480.

The previous prime is 55565431. The next prime is 55565467. The reversal of 55565449 is 94456555.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 94456555 = 5 ⋅18891311.

It is an interprime number because it is at equal distance from previous prime (55565431) and next prime (55565467).

It can be written as a sum of positive squares in 2 ways, for example, as 6285049 + 49280400 = 2507^2 + 7020^2 .

It is a cyclic number.

It is not a de Polignac number, because 55565449 - 2⁹ = 55564937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55575449) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 455394 + ... + 455515.

It is an arithmetic number, because the mean of its divisors is an integer number (14119105).

Almost surely, 2^55565449 is an apocalyptic number.

It is an amenable number.

55565449 is a deficient number, since it is larger than the sum of its proper divisors (910971).

55565449 is an equidigital number, since it uses as much as digits as its factorization.

55565449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 910970.

The product of its digits is 540000, while the sum is 43.

The square root of 55565449 is about 7454.2235678842. The cubic root of 55565449 is about 381.5940631736.

It can be divided in two parts, 55 and 565449, that added together give a square (565504 = 752²).

The spelling of 55565449 in words is "fifty-five million, five hundred sixty-five thousand, four hundred forty-nine".