13145775 has 12 divisors (see below), whose sum is σ = 21734472. Its totient is φ = 7011040.

The previous prime is 13145773. The next prime is 13145801. The reversal of 13145775 is 57754131.

It is not a de Polignac number, because 13145775 - 2¹ = 13145773 is a prime.

It is a super-2 number, since 2×13145775² = 345622800701250, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13145773) 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 11 ways as a sum of consecutive naturals, for example, 87564 + ... + 87713.

It is an arithmetic number, because the mean of its divisors is an integer number (1811206).

Almost surely, 2^13145775 is an apocalyptic number.

13145775 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

13145775 is a deficient number, since it is larger than the sum of its proper divisors (8588697).

13145775 is a wasteful number, since it uses less digits than its factorization.

13145775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 175290 (or 175285 counting only the distinct ones).

The product of its digits is 14700, while the sum is 33.

The square root of 13145775 is about 3625.7102752426. The cubic root of 13145775 is about 236.0090906677.

The spelling of 13145775 in words is "thirteen million, one hundred forty-five thousand, seven hundred seventy-five".