13404557 has 8 divisors (see below), whose sum is σ = 14270400. Its totient is φ = 12554784.

The previous prime is 13404533. The next prime is 13404563. The reversal of 13404557 is 75540431.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13404557 - 2¹⁸ = 13142413 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13434557) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2273 + ... + 5654.

It is an arithmetic number, because the mean of its divisors is an integer number (1783800).

Almost surely, 2^13404557 is an apocalyptic number.

It is an amenable number.

13404557 is a deficient number, since it is larger than the sum of its proper divisors (865843).

13404557 is an equidigital number, since it uses as much as digits as its factorization.

13404557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8035.

The product of its (nonzero) digits is 8400, while the sum is 29.

The square root of 13404557 is about 3661.2234294017. The cubic root of 13404557 is about 237.5476956841.

Adding to 13404557 its reverse (75540431), we get a palindrome (88944988).

The spelling of 13404557 in words is "thirteen million, four hundred four thousand, five hundred fifty-seven".