13275555 has 32 divisors (see below), whose sum is σ = 22809600. Its totient is φ = 6569472.

The previous prime is 13275551. The next prime is 13275569. The reversal of 13275555 is 55557231.

It is not a de Polignac number, because 13275555 - 2² = 13275551 is a prime.

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 31 ways as a sum of consecutive naturals, for example, 19816 + ... + 20474.

It is an arithmetic number, because the mean of its divisors is an integer number (712800).

Almost surely, 2^13275555 is an apocalyptic number.

13275555 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

13275555 is a deficient number, since it is larger than the sum of its proper divisors (9534045).

13275555 is a wasteful number, since it uses less digits than its factorization.

13275555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 763.

The product of its digits is 26250, while the sum is 33.

The square root of 13275555 is about 3643.5635029460. The cubic root of 13275555 is about 236.7832054055.

The spelling of 13275555 in words is "thirteen million, two hundred seventy-five thousand, five hundred fifty-five".