55006649 has 4 divisors (see below), whose sum is σ = 56903460. Its totient is φ = 53109840.

The previous prime is 55006643. The next prime is 55006669. The reversal of 55006649 is 94660055.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 43138624 + 11868025 = 6568^2 + 3445^2 .

It is a cyclic number.

It is not a de Polignac number, because 55006649 - 2¹² = 55002553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55006643) 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, 948362 + ... + 948419.

It is an arithmetic number, because the mean of its divisors is an integer number (14225865).

Almost surely, 2^55006649 is an apocalyptic number.

It is an amenable number.

55006649 is a deficient number, since it is larger than the sum of its proper divisors (1896811).

55006649 is a wasteful number, since it uses less digits than its factorization.

55006649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1896810.

The product of its (nonzero) digits is 32400, while the sum is 35.

The square root of 55006649 is about 7416.6467490369. The cubic root of 55006649 is about 380.3105702046.

It can be divided in two parts, 55006 and 649, that added together give a palindrome (55655).

The spelling of 55006649 in words is "fifty-five million, six thousand, six hundred forty-nine".