13455623 has 4 divisors (see below), whose sum is σ = 13919640. Its totient is φ = 12991608.

The previous prime is 13455577. The next prime is 13455641. The reversal of 13455623 is 32655431.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32655431 = 31 ⋅1053401.

It is a cyclic number.

It is not a de Polignac number, because 13455623 - 2⁸ = 13455367 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29), and also a Moran number because the ratio is a prime number: 463987 = 13455623 / (1 + 3 + 4 + 5 + 5 + 6 + 2 + 3).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13455223) 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 3 ways as a sum of consecutive naturals, for example, 231965 + ... + 232022.

It is an arithmetic number, because the mean of its divisors is an integer number (3479910).

Almost surely, 2^13455623 is an apocalyptic number.

13455623 is a deficient number, since it is larger than the sum of its proper divisors (464017).

13455623 is an equidigital number, since it uses as much as digits as its factorization.

13455623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 464016.

The product of its digits is 10800, while the sum is 29.

The square root of 13455623 is about 3668.1906984234. The cubic root of 13455623 is about 237.8489673310.

It can be divided in two parts, 13455 and 623, that multiplied together give a triangular number (8382465 = T₄₀₉₄).

The spelling of 13455623 in words is "thirteen million, four hundred fifty-five thousand, six hundred twenty-three".