13550889 has 16 divisors (see below), whose sum is σ = 19793664. Its totient is φ = 8178000.

The previous prime is 13550863. The next prime is 13550893. The reversal of 13550889 is 98805531.

13550889 = 62² + 63² + ... + 344².

13550889 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13550889 - 2²¹ = 11453737 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13550489) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8614 + ... + 10064.

It is an arithmetic number, because the mean of its divisors is an integer number (1237104).

Almost surely, 2^13550889 is an apocalyptic number.

It is an amenable number.

13550889 is a deficient number, since it is larger than the sum of its proper divisors (6242775).

13550889 is a wasteful number, since it uses less digits than its factorization.

13550889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1748.

The product of its (nonzero) digits is 43200, while the sum is 39.

The square root of 13550889 is about 3681.1532160452. The cubic root of 13550889 is about 238.4089724657.

The spelling of 13550889 in words is "thirteen million, five hundred fifty thousand, eight hundred eighty-nine".