55560613 has 2 divisors, whose sum is σ = 55560614. Its totient is φ = 55560612.

The previous prime is 55560611. The next prime is 55560629. The reversal of 55560613 is 31606555.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 55100929 + 459684 = 7423^2 + 678^2 .

It is a cyclic number.

It is not a de Polignac number, because 55560613 - 2¹ = 55560611 is a prime.

Together with 55560611, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55560611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27780306 + 27780307.

It is an arithmetic number, because the mean of its divisors is an integer number (27780307).

Almost surely, 2^55560613 is an apocalyptic number.

It is an amenable number.

55560613 is a deficient number, since it is larger than the sum of its proper divisors (1).

55560613 is an equidigital number, since it uses as much as digits as its factorization.

55560613 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13500, while the sum is 31.

The square root of 55560613 is about 7453.8991809656. The cubic root of 55560613 is about 381.5829924905.

The spelling of 55560613 in words is "fifty-five million, five hundred sixty thousand, six hundred thirteen".