13550538 has 16 divisors (see below), whose sum is σ = 27223200. Its totient is φ = 4496496.

The previous prime is 13550531. The next prime is 13550539. The reversal of 13550538 is 83505531.

It is not an unprimeable number, because it can be changed into a prime (13550531) 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 7 ways as a sum of consecutive naturals, for example, 3613 + ... + 6336.

It is an arithmetic number, because the mean of its divisors is an integer number (1701450).

Almost surely, 2^13550538 is an apocalyptic number.

13550538 is an abundant number, since it is smaller than the sum of its proper divisors (13672662).

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

13550538 is a wasteful number, since it uses less digits than its factorization.

13550538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10181.

The product of its (nonzero) digits is 9000, while the sum is 30.

The square root of 13550538 is about 3681.1055404593. The cubic root of 13550538 is about 238.4069139963.

The spelling of 13550538 in words is "thirteen million, five hundred fifty thousand, five hundred thirty-eight".