13751481 has 16 divisors (see below), whose sum is σ = 19071360. Its totient is φ = 8803200.

The previous prime is 13751477. The next prime is 13751483. The reversal of 13751481 is 18415731.

It is not a de Polignac number, because 13751481 - 2² = 13751477 is a prime.

It is a super-2 number, since 2×13751481² = 378206459386722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (13751483) 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 15 ways as a sum of consecutive naturals, for example, 22581 + ... + 23181.

It is an arithmetic number, because the mean of its divisors is an integer number (1191960).

Almost surely, 2^13751481 is an apocalyptic number.

It is an amenable number.

13751481 is a deficient number, since it is larger than the sum of its proper divisors (5319879).

13751481 is a wasteful number, since it uses less digits than its factorization.

13751481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 896.

The product of its digits is 3360, while the sum is 30.

The square root of 13751481 is about 3708.2989361701. The cubic root of 13751481 is about 239.5795938690.

The spelling of 13751481 in words is "thirteen million, seven hundred fifty-one thousand, four hundred eighty-one".