55658066 has 4 divisors (see below), whose sum is σ = 83487102. Its totient is φ = 27829032.

The previous prime is 55658041. The next prime is 55658089. The reversal of 55658066 is 66085655.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 66085655 = 5 ⋅13217131.

It can be written as a sum of positive squares in only one way, i.e., 45954841 + 9703225 = 6779^2 + 3115^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 13914515 + ... + 13914518.

Almost surely, 2^55658066 is an apocalyptic number.

55658066 is a deficient number, since it is larger than the sum of its proper divisors (27829036).

55658066 is a wasteful number, since it uses less digits than its factorization.

55658066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27829035.

The product of its (nonzero) digits is 216000, while the sum is 41.

The square root of 55658066 is about 7460.4333654286. The cubic root of 55658066 is about 381.8059603145.

It can be divided in two parts, 5565 and 8066, that added together give a palindrome (13631).

The spelling of 55658066 in words is "fifty-five million, six hundred fifty-eight thousand, sixty-six".