55601649 has 12 divisors (see below), whose sum is σ = 83805696. Its totient is φ = 35455992.

The previous prime is 55601647. The next prime is 55601653. The reversal of 55601649 is 94610655.

55601649 is a `hidden beast` number, since 5 + 5 + 6 + 0 + 1 + 649 = 666.

55601649 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 55601649 - 2¹ = 55601647 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55601647) 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 11 ways as a sum of consecutive naturals, for example, 134097 + ... + 134510.

It is an arithmetic number, because the mean of its divisors is an integer number (6983808).

Almost surely, 2^55601649 is an apocalyptic number.

It is an amenable number.

55601649 is a deficient number, since it is larger than the sum of its proper divisors (28204047).

55601649 is a wasteful number, since it uses less digits than its factorization.

55601649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 268636 (or 268633 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 36.

The square root of 55601649 is about 7456.6513261651. The cubic root of 55601649 is about 381.6769126578.

It can be divided in two parts, 5560164 and 9, that multiplied together give a square (50041476 = 7074²).

The spelling of 55601649 in words is "fifty-five million, six hundred one thousand, six hundred forty-nine".