55517649 has 32 divisors (see below), whose sum is σ = 85034880. Its totient is φ = 31910400.

The previous prime is 55517641. The next prime is 55517681. The reversal of 55517649 is 94671555.

55517649 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 55517649 - 2³ = 55517641 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 55517649.

It is not an unprimeable number, because it can be changed into a prime (55517641) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 49507 + ... + 50615.

It is an arithmetic number, because the mean of its divisors is an integer number (2657340).

Almost surely, 2^55517649 is an apocalyptic number.

It is an amenable number.

55517649 is a deficient number, since it is larger than the sum of its proper divisors (29517231).

55517649 is a wasteful number, since it uses less digits than its factorization.

55517649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1201.

The product of its digits is 189000, while the sum is 42.

The square root of 55517649 is about 7451.0166420429. The cubic root of 55517649 is about 381.4846100907.

The spelling of 55517649 in words is "fifty-five million, five hundred seventeen thousand, six hundred forty-nine".