55383866 has 8 divisors (see below), whose sum is σ = 85102164. Its totient is φ = 27016480.

The previous prime is 55383833. The next prime is 55383869. The reversal of 55383866 is 66838355.

It can be written as a sum of positive squares in 2 ways, for example, as 41538025 + 13845841 = 6445^2 + 3721^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×55383866² = 6134745226211912, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (55383869) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 337625 + ... + 337788.

Almost surely, 2^55383866 is an apocalyptic number.

55383866 is a deficient number, since it is larger than the sum of its proper divisors (29718298).

55383866 is a wasteful number, since it uses less digits than its factorization.

55383866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 675456.

The product of its digits is 518400, while the sum is 44.

The square root of 55383866 is about 7442.0337274162. The cubic root of 55383866 is about 381.1779376117.

Adding to 55383866 its reverse (66838355), we get a palindrome (122222221).

The spelling of 55383866 in words is "fifty-five million, three hundred eighty-three thousand, eight hundred sixty-six".