55659613 has 4 divisors (see below), whose sum is σ = 57578940. Its totient is φ = 53740288.

The previous prime is 55659559. The next prime is 55659629. The reversal of 55659613 is 31695655.

55659613 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 43007364 + 12652249 = 6558^2 + 3557^2 .

It is a cyclic number.

It is not a de Polignac number, because 55659613 - 2¹⁷ = 55528541 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55659013) 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 3 ways as a sum of consecutive naturals, for example, 959620 + ... + 959677.

It is an arithmetic number, because the mean of its divisors is an integer number (14394735).

Almost surely, 2^55659613 is an apocalyptic number.

It is an amenable number.

55659613 is a deficient number, since it is larger than the sum of its proper divisors (1919327).

55659613 is a wasteful number, since it uses less digits than its factorization.

55659613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1919326.

The product of its digits is 121500, while the sum is 40.

The square root of 55659613 is about 7460.5370450122. The cubic root of 55659613 is about 381.8094976775.

The spelling of 55659613 in words is "fifty-five million, six hundred fifty-nine thousand, six hundred thirteen".