13315555 has 8 divisors (see below), whose sum is σ = 17431344. Its totient is φ = 9684000.

The previous prime is 13315543. The next prime is 13315559. The reversal of 13315555 is 55551331.

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

It is not a de Polignac number, because 13315555 - 2¹¹ = 13313507 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13315559) 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, 120996 + ... + 121105.

It is an arithmetic number, because the mean of its divisors is an integer number (2178918).

Almost surely, 2^13315555 is an apocalyptic number.

13315555 is a deficient number, since it is larger than the sum of its proper divisors (4115789).

13315555 is a wasteful number, since it uses less digits than its factorization.

13315555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 242117.

The product of its digits is 5625, while the sum is 28.

The square root of 13315555 is about 3649.0485061177. The cubic root of 13315555 is about 237.0207806973.

Adding to 13315555 its reverse (55551331), we get a palindrome (68866886).

It can be divided in two parts, 1331 and 5555, that added together give a palindrome (6886).

The spelling of 13315555 in words is "thirteen million, three hundred fifteen thousand, five hundred fifty-five".