55455865 has 4 divisors (see below), whose sum is σ = 66547044. Its totient is φ = 44364688.

The previous prime is 55455847. The next prime is 55455877. The reversal of 55455865 is 56855455.

55455865 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 56855455 = 5 ⋅11371091.

It can be written as a sum of positive squares in 2 ways, for example, as 37613689 + 17842176 = 6133^2 + 4224^2 .

It is a cyclic number.

It is not a de Polignac number, because 55455865 - 2⁹ = 55455353 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5545582 + ... + 5545591.

It is an arithmetic number, because the mean of its divisors is an integer number (16636761).

Almost surely, 2^55455865 is an apocalyptic number.

It is an amenable number.

55455865 is a deficient number, since it is larger than the sum of its proper divisors (11091179).

55455865 is a wasteful number, since it uses less digits than its factorization.

55455865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11091178.

The product of its digits is 600000, while the sum is 43.

The square root of 55455865 is about 7446.8694764982. The cubic root of 55455865 is about 381.3430431337.

The spelling of 55455865 in words is "fifty-five million, four hundred fifty-five thousand, eight hundred sixty-five".