13945554 has 64 divisors (see below), whose sum is σ = 35942400. Its totient is φ = 3925584.

The previous prime is 13945543. The next prime is 13945571. The reversal of 13945554 is 45554931.

13945554 is a `hidden beast` number, since 13 + 94 + 5 + 554 = 666.

13945554 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 a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 29629 + ... + 30095.

It is an arithmetic number, because the mean of its divisors is an integer number (561600).

Almost surely, 2^13945554 is an apocalyptic number.

13945554 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 13945554, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17971200).

13945554 is an abundant number, since it is smaller than the sum of its proper divisors (21996846).

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

13945554 is a wasteful number, since it uses less digits than its factorization.

13945554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 564 (or 558 counting only the distinct ones).

The product of its digits is 54000, while the sum is 36.

The square root of 13945554 is about 3734.3746464435. The cubic root of 13945554 is about 240.7013857451.

The spelling of 13945554 in words is "thirteen million, nine hundred forty-five thousand, five hundred fifty-four".