13945556 has 12 divisors (see below), whose sum is σ = 24621492. Its totient is φ = 6910848.

The previous prime is 13945543. The next prime is 13945571. The reversal of 13945556 is 65554931.

13945556 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 739600 + 13205956 = 860^2 + 3634^2 .

It is a super-3 number, since 3×13945556³ (a number of 22 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14975 + ... + 15878.

It is an arithmetic number, because the mean of its divisors is an integer number (2051791).

Almost surely, 2^13945556 is an apocalyptic number.

It is an amenable number.

13945556 is a deficient number, since it is larger than the sum of its proper divisors (10675936).

13945556 is a wasteful number, since it uses less digits than its factorization.

13945556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30970 (or 30968 counting only the distinct ones).

The product of its digits is 81000, while the sum is 38.

The square root of 13945556 is about 3734.3749142259. The cubic root of 13945556 is about 240.7013972518.

The spelling of 13945556 in words is "thirteen million, nine hundred forty-five thousand, five hundred fifty-six".