13851801 has 12 divisors (see below), whose sum is σ = 20549412. Its totient is φ = 8984736.

The previous prime is 13851797. The next prime is 13851833. The reversal of 13851801 is 10815831.

It can be written as a sum of positive squares in 2 ways, for example, as 8856576 + 4995225 = 2976^2 + 2235^2 .

It is not a de Polignac number, because 13851801 - 2² = 13851797 is a prime.

It is a super-3 number, since 3×13851801³ (a number of 22 digits) contains 333 as substring.

It is a Curzon number.

It is a zygodrome in base 7.

It is not an unprimeable number, because it can be changed into a prime (13851841) 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, 20466 + ... + 21131.

It is an arithmetic number, because the mean of its divisors is an integer number (1712451).

Almost surely, 2^13851801 is an apocalyptic number.

It is an amenable number.

13851801 is a deficient number, since it is larger than the sum of its proper divisors (6697611).

13851801 is a wasteful number, since it uses less digits than its factorization.

13851801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41640 (or 41637 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 27.

The square root of 13851801 is about 3721.8007738190. The cubic root of 13851801 is about 240.1607776865.

The spelling of 13851801 in words is "thirteen million, eight hundred fifty-one thousand, eight hundred one".