13225550 has 24 divisors (see below), whose sum is σ = 26493096. Its totient is φ = 4883040.

The previous prime is 13225549. The next prime is 13225573. The reversal of 13225550 is 5552231.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 9524 + ... + 10823.

It is an arithmetic number, because the mean of its divisors is an integer number (1103879).

Almost surely, 2^13225550 is an apocalyptic number.

13225550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13225550 is an abundant number, since it is smaller than the sum of its proper divisors (13267546).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13225550 is a wasteful number, since it uses less digits than its factorization.

13225550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20372 (or 20367 counting only the distinct ones).

The product of its (nonzero) digits is 1500, while the sum is 23.

The square root of 13225550 is about 3636.6949280906. The cubic root of 13225550 is about 236.4855344429.

Adding to 13225550 its reverse (5552231), we get a palindrome (18777781).

The spelling of 13225550 in words is "thirteen million, two hundred twenty-five thousand, five hundred fifty".