13545887 has 4 divisors (see below), whose sum is σ = 13602336. Its totient is φ = 13489440.

The previous prime is 13545799. The next prime is 13545907. The reversal of 13545887 is 78854531.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 78854531 = 7 ⋅11264933.

It is a cyclic number.

It is not a de Polignac number, because 13545887 - 2²⁰ = 12497311 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13544887) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27863 + ... + 28344.

It is an arithmetic number, because the mean of its divisors is an integer number (3400584).

Almost surely, 2^13545887 is an apocalyptic number.

13545887 is a deficient number, since it is larger than the sum of its proper divisors (56449).

13545887 is an equidigital number, since it uses as much as digits as its factorization.

13545887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56448.

The product of its digits is 134400, while the sum is 41.

The square root of 13545887 is about 3680.4737466799. The cubic root of 13545887 is about 238.3796344535.

The spelling of 13545887 in words is "thirteen million, five hundred forty-five thousand, eight hundred eighty-seven".