13555000 has 40 divisors (see below), whose sum is σ = 31771080. Its totient is φ = 5420000.

The previous prime is 13554997. The next prime is 13555013. The reversal of 13555000 is 55531.

It is a tau number, because it is divible by the number of its divisors (40).

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 9 ways as a sum of consecutive naturals, for example, 3645 + ... + 6355.

It is an arithmetic number, because the mean of its divisors is an integer number (794277).

Almost surely, 2^13555000 is an apocalyptic number.

13555000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13555000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15885540).

13555000 is an abundant number, since it is smaller than the sum of its proper divisors (18216080).

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

13555000 is an equidigital number, since it uses as much as digits as its factorization.

13555000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2737 (or 2718 counting only the distinct ones).

The product of its (nonzero) digits is 375, while the sum is 19.

The square root of 13555000 is about 3681.7115585010. The cubic root of 13555000 is about 238.4330791299.

The spelling of 13555000 in words is "thirteen million, five hundred fifty-five thousand".