5436 has 18 divisors (see below), whose sum is σ = 13832. Its totient is φ = 1800.

The previous prime is 5431. The next prime is 5437. The reversal of 5436 is 6345.

Added to its reverse (6345) it gives a triangular number (11781 = T₁₅₃).

5436 = T₅ + T₆ + ... + T₃₁.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an alternating number because its digits alternate between odd and even.

It is a nialpdrome in base 6 and base 9.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 40 + ... + 111.

2⁵⁴³⁶ is an apocalyptic number.

It is an amenable number.

5436 is an abundant number, since it is smaller than the sum of its proper divisors (8396).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

5436 is a wasteful number, since it uses less digits than its factorization.

5436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161 (or 156 counting only the distinct ones).

The product of its digits is 360, while the sum is 18.

The square root of 5436 is about 73.7292343647. The cubic root of 5436 is about 17.5830070144.

Adding to 5436 its reverse (6345), we get a triangular number (11781 = T₁₅₃).

Subtracting 5436 from its reverse (6345), we obtain a palindrome (909).

It can be divided in two parts, 5 and 436, that added together give a square (441 = 21²).

The spelling of 5436 in words is "five thousand, four hundred thirty-six".