13275557 has 4 divisors (see below), whose sum is σ = 13282956. Its totient is φ = 13268160.

The previous prime is 13275551. The next prime is 13275569. The reversal of 13275557 is 75557231.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 5909761 + 7365796 = 2431^2 + 2714^2 .

It is a cyclic number.

It is not a de Polignac number, because 13275557 - 2¹⁰ = 13274533 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 (13275551) 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 3 ways as a sum of consecutive naturals, for example, 893 + ... + 5229.

It is an arithmetic number, because the mean of its divisors is an integer number (3320739).

Almost surely, 2^13275557 is an apocalyptic number.

It is an amenable number.

13275557 is a deficient number, since it is larger than the sum of its proper divisors (7399).

13275557 is an equidigital number, since it uses as much as digits as its factorization.

13275557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7398.

The product of its digits is 36750, while the sum is 35.

The square root of 13275557 is about 3643.5637774026. The cubic root of 13275557 is about 236.7832172962.

The spelling of 13275557 in words is "thirteen million, two hundred seventy-five thousand, five hundred fifty-seven".