143555 has 4 divisors (see below), whose sum is σ = 172272. Its totient is φ = 114840.

The previous prime is 143551. The next prime is 143567. The reversal of 143555 is 555341.

Added to its reverse (555341) it gives a square (698896 = 836²).

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 555341 = 163 ⋅3407.

It is not a de Polignac number, because 143555 - 2² = 143551 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 143555.

It is not an unprimeable number, because it can be changed into a prime (143551) 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 3 ways as a sum of consecutive naturals, for example, 14351 + ... + 14360.

It is an arithmetic number, because the mean of its divisors is an integer number (43068).

2¹⁴³⁵⁵⁵ is an apocalyptic number.

143555 is a deficient number, since it is larger than the sum of its proper divisors (28717).

143555 is an equidigital number, since it uses as much as digits as its factorization.

143555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28716.

The product of its digits is 1500, while the sum is 23.

The square root of 143555 is about 378.8865265485. The cubic root of 143555 is about 52.3607800457.

Adding to 143555 its reverse (555341), we get a palindrome (698896).

It can be divided in two parts, 14 and 3555, that multiplied together give a triangular number (49770 = T₃₁₅).

The spelling of 143555 in words is "one hundred forty-three thousand, five hundred fifty-five".