143522 has 4 divisors (see below), whose sum is σ = 215286. Its totient is φ = 71760.

The previous prime is 143519. The next prime is 143527. The reversal of 143522 is 225341.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 128881 + 14641 = 359^2 + 121^2 .

It is an Ulam number.

It is a plaindrome in base 9.

It is a self number, because there is not a number n which added to its sum of digits gives 143522.

It is not an unprimeable number, because it can be changed into a prime (143527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35879 + ... + 35882.

2¹⁴³⁵²² is an apocalyptic number.

143522 is the 203-rd centered heptagonal number.

143522 is a deficient number, since it is larger than the sum of its proper divisors (71764).

143522 is an equidigital number, since it uses as much as digits as its factorization.

143522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71763.

The product of its digits is 240, while the sum is 17.

The square root of 143522 is about 378.8429753869. The cubic root of 143522 is about 52.3567675576.

Adding to 143522 its reverse (225341), we get a palindrome (368863).

The spelling of 143522 in words is "one hundred forty-three thousand, five hundred twenty-two".