55105385 has 16 divisors (see below), whose sum is σ = 67896576. Its totient is φ = 42914688.

The previous prime is 55105367. The next prime is 55105397. The reversal of 55105385 is 58350155.

It is a cyclic number.

It is not a de Polignac number, because 55105385 - 2¹² = 55101289 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 52829 + ... + 53861.

It is an arithmetic number, because the mean of its divisors is an integer number (4243536).

Almost surely, 2^55105385 is an apocalyptic number.

It is an amenable number.

55105385 is a deficient number, since it is larger than the sum of its proper divisors (12791191).

55105385 is a wasteful number, since it uses less digits than its factorization.

55105385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1312.

The product of its (nonzero) digits is 15000, while the sum is 32.

The square root of 55105385 is about 7423.3001421201. The cubic root of 55105385 is about 380.5379845270.

The spelling of 55105385 in words is "fifty-five million, one hundred five thousand, three hundred eighty-five".