55506649 has 8 divisors (see below), whose sum is σ = 64114848. Its totient is φ = 47492160.

The previous prime is 55506643. The next prime is 55506653. The reversal of 55506649 is 94660555.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 55506649 - 2³ = 55506641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55506641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 148227 + ... + 148600.

It is an arithmetic number, because the mean of its divisors is an integer number (8014356).

Almost surely, 2^55506649 is an apocalyptic number.

It is an amenable number.

55506649 is a deficient number, since it is larger than the sum of its proper divisors (8608199).

55506649 is a wasteful number, since it uses less digits than its factorization.

55506649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 296855.

The product of its (nonzero) digits is 162000, while the sum is 40.

The square root of 55506649 is about 7450.2784511721. The cubic root of 55506649 is about 381.4594132511.

The spelling of 55506649 in words is "fifty-five million, five hundred six thousand, six hundred forty-nine".