55201225 has 24 divisors (see below), whose sum is σ = 71245440. Its totient is φ = 42390720.

The previous prime is 55201189. The next prime is 55201229. The reversal of 55201225 is 52210255.

55201225 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-55201225 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 55201196 and 55201205.

It is not an unprimeable number, because it can be changed into a prime (55201229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 76416 + ... + 77134.

It is an arithmetic number, because the mean of its divisors is an integer number (2968560).

Almost surely, 2^55201225 is an apocalyptic number.

It is an amenable number.

55201225 is a deficient number, since it is larger than the sum of its proper divisors (16044215).

55201225 is a wasteful number, since it uses less digits than its factorization.

55201225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 849 (or 844 counting only the distinct ones).

The product of its (nonzero) digits is 1000, while the sum is 22.

The square root of 55201225 is about 7429.7526876741. The cubic root of 55201225 is about 380.7584689520.

The spelling of 55201225 in words is "fifty-five million, two hundred one thousand, two hundred twenty-five".