13557965 has 8 divisors (see below), whose sum is σ = 16419480. Its totient is φ = 10746432.

The previous prime is 13557961. The next prime is 13557977. The reversal of 13557965 is 56975531.

It can be written as a sum of positive squares in 4 ways, for example, as 37636 + 13520329 = 194^2 + 3677^2 .

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 13557965 - 2² = 13557961 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13557961) 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 7 ways as a sum of consecutive naturals, for example, 11894 + ... + 12983.

It is an arithmetic number, because the mean of its divisors is an integer number (2052435).

Almost surely, 2^13557965 is an apocalyptic number.

It is an amenable number.

13557965 is a deficient number, since it is larger than the sum of its proper divisors (2861515).

13557965 is a wasteful number, since it uses less digits than its factorization.

13557965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24991.

The product of its digits is 141750, while the sum is 41.

The square root of 13557965 is about 3682.1142024658. The cubic root of 13557965 is about 238.4504626916.

The spelling of 13557965 in words is "thirteen million, five hundred fifty-seven thousand, nine hundred sixty-five".