55885649 has 4 divisors (see below), whose sum is σ = 55918320. Its totient is φ = 55852980.

The previous prime is 55885603. The next prime is 55885723. The reversal of 55885649 is 94658855.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 55885649 - 2¹⁶ = 55820113 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 55885597 and 55885606.

It is not an unprimeable number, because it can be changed into a prime (55885549) 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, 13619 + ... + 17240.

It is an arithmetic number, because the mean of its divisors is an integer number (13979580).

Almost surely, 2^55885649 is an apocalyptic number.

It is an amenable number.

55885649 is a deficient number, since it is larger than the sum of its proper divisors (32671).

55885649 is a wasteful number, since it uses less digits than its factorization.

55885649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32670.

The product of its digits is 1728000, while the sum is 50.

The square root of 55885649 is about 7475.6704716032. The cubic root of 55885649 is about 382.3256476803.

The spelling of 55885649 in words is "fifty-five million, eight hundred eighty-five thousand, six hundred forty-nine".