55660061 has 4 divisors (see below), whose sum is σ = 55682172. Its totient is φ = 55637952.

The previous prime is 55660051. The next prime is 55660081. The reversal of 55660061 is 16006655.

55660061 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 32137561 + 23522500 = 5669^2 + 4850^2 .

It is a cyclic number.

It is not a de Polignac number, because 55660061 - 2⁶ = 55659997 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55660051) 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, 6710 + ... + 12503.

It is an arithmetic number, because the mean of its divisors is an integer number (13920543).

Almost surely, 2^55660061 is an apocalyptic number.

It is an amenable number.

55660061 is a deficient number, since it is larger than the sum of its proper divisors (22111).

55660061 is a wasteful number, since it uses less digits than its factorization.

55660061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22110.

The product of its (nonzero) digits is 5400, while the sum is 29.

The square root of 55660061 is about 7460.5670696000. The cubic root of 55660061 is about 381.8105220600.

The spelling of 55660061 in words is "fifty-five million, six hundred sixty thousand, sixty-one".