55666241 has 4 divisors (see below), whose sum is σ = 57170772. Its totient is φ = 54161712.

The previous prime is 55666217. The next prime is 55666249. The reversal of 55666241 is 14266655.

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 50353216 + 5313025 = 7096^2 + 2305^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55666241 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55666249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 752210 + ... + 752283.

It is an arithmetic number, because the mean of its divisors is an integer number (14292693).

Almost surely, 2^55666241 is an apocalyptic number.

It is an amenable number.

55666241 is a deficient number, since it is larger than the sum of its proper divisors (1504531).

55666241 is a wasteful number, since it uses less digits than its factorization.

55666241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1504530.

The product of its digits is 43200, while the sum is 35.

The square root of 55666241 is about 7460.9812357357. The cubic root of 55666241 is about 381.8246524895.

The spelling of 55666241 in words is "fifty-five million, six hundred sixty-six thousand, two hundred forty-one".