13545555 has 8 divisors (see below), whose sum is σ = 21672912. Its totient is φ = 7224288.

The previous prime is 13545547. The next prime is 13545557. The reversal of 13545555 is 55554531.

13545555 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 13545555 - 2³ = 13545547 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13545557) 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, 451504 + ... + 451533.

It is an arithmetic number, because the mean of its divisors is an integer number (2709114).

Almost surely, 2^13545555 is an apocalyptic number.

13545555 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

13545555 is a deficient number, since it is larger than the sum of its proper divisors (8127357).

13545555 is an equidigital number, since it uses as much as digits as its factorization.

13545555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 903045.

The product of its digits is 37500, while the sum is 33.

The square root of 13545555 is about 3680.4286435142. The cubic root of 13545555 is about 238.3776869328.

The spelling of 13545555 in words is "thirteen million, five hundred forty-five thousand, five hundred fifty-five".