13749550 has 24 divisors (see below), whose sum is σ = 25931376. Its totient is φ = 5423040.

The previous prime is 13749503. The next prime is 13749557. The reversal of 13749550 is 5594731.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13749557) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 1767 + ... + 5533.

It is an arithmetic number, because the mean of its divisors is an integer number (1080474).

Almost surely, 2^13749550 is an apocalyptic number.

13749550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13749550 is a deficient number, since it is larger than the sum of its proper divisors (12181826).

13749550 is a wasteful number, since it uses less digits than its factorization.

13749550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3852 (or 3847 counting only the distinct ones).

The product of its (nonzero) digits is 18900, while the sum is 34.

The square root of 13749550 is about 3708.0385650637. The cubic root of 13749550 is about 239.5683793229.

The spelling of 13749550 in words is "thirteen million, seven hundred forty-nine thousand, five hundred fifty".