55012205 has 16 divisors (see below), whose sum is σ = 69120000. Its totient is φ = 41952768.

The previous prime is 55012171. The next prime is 55012219. The reversal of 55012205 is 50221055.

It is a cyclic number.

It is not a de Polignac number, because 55012205 - 2¹⁰ = 55011181 is a prime.

It is a congruent number.

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, 43421 + ... + 44669.

It is an arithmetic number, because the mean of its divisors is an integer number (4320000).

Almost surely, 2^55012205 is an apocalyptic number.

It is an amenable number.

55012205 is a deficient number, since it is larger than the sum of its proper divisors (14107795).

55012205 is a wasteful number, since it uses less digits than its factorization.

55012205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1660.

The product of its (nonzero) digits is 500, while the sum is 20.

The square root of 55012205 is about 7417.0213023828. The cubic root of 55012205 is about 380.3233743197.

The spelling of 55012205 in words is "fifty-five million, twelve thousand, two hundred five".