13257655 has 8 divisors (see below), whose sum is σ = 16339392. Its totient is φ = 10319328.

The previous prime is 13257653. The next prime is 13257659. The reversal of 13257655 is 55675231.

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 13257655 - 2¹ = 13257653 is a prime.

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 13257655.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13257653) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35647 + ... + 36016.

It is an arithmetic number, because the mean of its divisors is an integer number (2042424).

Almost surely, 2^13257655 is an apocalyptic number.

13257655 is a deficient number, since it is larger than the sum of its proper divisors (3081737).

13257655 is an equidigital number, since it uses as much as digits as its factorization.

13257655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71705.

The product of its digits is 31500, while the sum is 34.

The square root of 13257655 is about 3641.1062879295. The cubic root of 13257655 is about 236.6767358893.

The spelling of 13257655 in words is "thirteen million, two hundred fifty-seven thousand, six hundred fifty-five".