13356545 has 4 divisors (see below), whose sum is σ = 16027860. Its totient is φ = 10685232.

The previous prime is 13356527. The next prime is 13356557. The reversal of 13356545 is 54565331.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 54565331 = 571 ⋅95561.

It can be written as a sum of positive squares in 2 ways, for example, as 2093809 + 11262736 = 1447^2 + 3356^2 .

It is a cyclic number.

It is not a de Polignac number, because 13356545 - 2⁶ = 13356481 is a prime.

It is a Curzon number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 1335650 + ... + 1335659.

It is an arithmetic number, because the mean of its divisors is an integer number (4006965).

Almost surely, 2^13356545 is an apocalyptic number.

It is an amenable number.

13356545 is a deficient number, since it is larger than the sum of its proper divisors (2671315).

13356545 is an equidigital number, since it uses as much as digits as its factorization.

13356545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2671314.

The product of its digits is 27000, while the sum is 32.

The square root of 13356545 is about 3654.6607229673. The cubic root of 13356545 is about 237.2637428966.

It can be divided in two parts, 13356 and 545, that multiplied together give a triangular number (7279020 = T₃₈₁₅).

The spelling of 13356545 in words is "thirteen million, three hundred fifty-six thousand, five hundred forty-five".