55225205 has 24 divisors (see below), whose sum is σ = 78562872. Its totient is φ = 37145472.

The previous prime is 55225199. The next prime is 55225217. The reversal of 55225205 is 50252255.

It can be written as a sum of positive squares in 4 ways, for example, as 2328676 + 52896529 = 1526^2 + 7273^2 .

It is not a de Polignac number, because 55225205 - 2⁴ = 55225189 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10859 + ... + 15111.

It is an arithmetic number, because the mean of its divisors is an integer number (3273453).

Almost surely, 2^55225205 is an apocalyptic number.

It is an amenable number.

55225205 is a deficient number, since it is larger than the sum of its proper divisors (23337667).

55225205 is a wasteful number, since it uses less digits than its factorization.

55225205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4325 (or 4318 counting only the distinct ones).

The product of its (nonzero) digits is 5000, while the sum is 26.

The square root of 55225205 is about 7431.3662942961. The cubic root of 55225205 is about 380.8135961481.

The spelling of 55225205 in words is "fifty-five million, two hundred twenty-five thousand, two hundred five".