13135545 has 12 divisors (see below), whose sum is σ = 22768356. Its totient is φ = 7005600.

The previous prime is 13135541. The next prime is 13135601. The reversal of 13135545 is 54553131.

It can be written as a sum of positive squares in 2 ways, for example, as 3250809 + 9884736 = 1803^2 + 3144^2 .

It is not a de Polignac number, because 13135545 - 2² = 13135541 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13135541) 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, 145906 + ... + 145995.

It is an arithmetic number, because the mean of its divisors is an integer number (1897363).

Almost surely, 2^13135545 is an apocalyptic number.

13135545 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13135545 is a deficient number, since it is larger than the sum of its proper divisors (9632811).

13135545 is a wasteful number, since it uses less digits than its factorization.

13135545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 291912 (or 291909 counting only the distinct ones).

The product of its digits is 4500, while the sum is 27.

The square root of 13135545 is about 3624.2992426123. The cubic root of 13135545 is about 235.9478542742.

Adding to 13135545 its reverse (54553131), we get a palindrome (67688676).

The spelling of 13135545 in words is "thirteen million, one hundred thirty-five thousand, five hundred forty-five".