13945550 has 12 divisors (see below), whose sum is σ = 25938816. Its totient is φ = 5578200.

The previous prime is 13945543. The next prime is 13945571. The reversal of 13945550 is 5554931.

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 5 ways as a sum of consecutive naturals, for example, 139406 + ... + 139505.

It is an arithmetic number, because the mean of its divisors is an integer number (2161568).

Almost surely, 2^13945550 is an apocalyptic number.

13945550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13945550 is a deficient number, since it is larger than the sum of its proper divisors (11993266).

13945550 is a wasteful number, since it uses less digits than its factorization.

13945550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 278923 (or 278918 counting only the distinct ones).

The product of its (nonzero) digits is 13500, while the sum is 32.

The square root of 13945550 is about 3734.3741108786. The cubic root of 13945550 is about 240.7013627316.

The spelling of 13945550 in words is "thirteen million, nine hundred forty-five thousand, five hundred fifty".