143553 has 8 divisors (see below), whose sum is σ = 193600. Its totient is φ = 94608.

The previous prime is 143551. The next prime is 143567. The reversal of 143553 is 355341.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 143553 - 2¹ = 143551 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (143551) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 108 + ... + 546.

It is an arithmetic number, because the mean of its divisors is an integer number (24200).

2¹⁴³⁵⁵³ is an apocalyptic number.

It is an amenable number.

143553 is a deficient number, since it is larger than the sum of its proper divisors (50047).

143553 is a wasteful number, since it uses less digits than its factorization.

143553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 551.

The product of its digits is 900, while the sum is 21.

The square root of 143553 is about 378.8838872267. The cubic root of 143553 is about 52.3605368821.

Adding to 143553 its product of digits (900), we get a triangular number (144453 = T₅₃₇).

Adding to 143553 its reverse (355341), we get a palindrome (498894).

It can be divided in two parts, 143 and 553, that added together give a palindrome (696).

The spelling of 143553 in words is "one hundred forty-three thousand, five hundred fifty-three".