55506225 has 24 divisors (see below), whose sum is σ = 92404800. Its totient is φ = 29398720.

The previous prime is 55506193. The next prime is 55506229. The reversal of 55506225 is 52260555.

It is not a de Polignac number, because 55506225 - 2⁵ = 55506193 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 55506192 and 55506201.

It is not an unprimeable number, because it can be changed into a prime (55506229) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8692 + ... + 13658.

It is an arithmetic number, because the mean of its divisors is an integer number (3850200).

Almost surely, 2^55506225 is an apocalyptic number.

It is an amenable number.

55506225 is a deficient number, since it is larger than the sum of its proper divisors (36898575).

55506225 is a wasteful number, since it uses less digits than its factorization.

55506225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5129 (or 5124 counting only the distinct ones).

The product of its (nonzero) digits is 15000, while the sum is 30.

The square root of 55506225 is about 7450.2499958055. The cubic root of 55506225 is about 381.4584419609.

The spelling of 55506225 in words is "fifty-five million, five hundred six thousand, two hundred twenty-five".