55666575 has 24 divisors (see below), whose sum is σ = 102262800. Its totient is φ = 29688480.

The previous prime is 55666543. The next prime is 55666577. The reversal of 55666575 is 57566655.

It is not a de Polignac number, because 55666575 - 2⁵ = 55666543 is a prime.

It is a super-3 number, since 3×55666575³ (a number of 24 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 55666575.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55666577) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 40560 + ... + 41909.

It is an arithmetic number, because the mean of its divisors is an integer number (4260950).

Almost surely, 2^55666575 is an apocalyptic number.

55666575 is a deficient number, since it is larger than the sum of its proper divisors (46596225).

55666575 is a wasteful number, since it uses less digits than its factorization.

55666575 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82488 (or 82477 counting only the distinct ones).

The product of its digits is 945000, while the sum is 45.

The square root of 55666575 is about 7461.0036188170. The cubic root of 55666575 is about 381.8254161431.

The spelling of 55666575 in words is "fifty-five million, six hundred sixty-six thousand, five hundred seventy-five".