13554431 has 4 divisors (see below), whose sum is σ = 14786664. Its totient is φ = 12322200.

The previous prime is 13554427. The next prime is 13554451. The reversal of 13554431 is 13445531.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 13554431 - 2² = 13554427 is a prime.

It is a super-2 number, since 2×13554431² = 367445199467522, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13554431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13554451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 616100 + ... + 616121.

It is an arithmetic number, because the mean of its divisors is an integer number (3696666).

Almost surely, 2^13554431 is an apocalyptic number.

13554431 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

13554431 is a deficient number, since it is larger than the sum of its proper divisors (1232233).

13554431 is a wasteful number, since it uses less digits than its factorization.

13554431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1232232.

The product of its digits is 3600, while the sum is 26.

The square root of 13554431 is about 3681.6342838473. The cubic root of 13554431 is about 238.4297428377.

Adding to 13554431 its reverse (13445531), we get a palindrome (26999962).

Subtracting from 13554431 its reverse (13445531), we obtain a square (108900 = 330²).

The spelling of 13554431 in words is "thirteen million, five hundred fifty-four thousand, four hundred thirty-one".