143053521 has 16 divisors (see below), whose sum is σ = 217494144. Its totient is φ = 82854144.

The previous prime is 143053517. The next prime is 143053567. The reversal of 143053521 is 125350341.

It is not a de Polignac number, because 143053521 - 2² = 143053517 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 143053491 and 143053500.

It is not an unprimeable number, because it can be changed into a prime (143053591) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 107221 + ... + 108546.

It is an arithmetic number, because the mean of its divisors is an integer number (13593384).

Almost surely, 2^143053521 is an apocalyptic number.

It is an amenable number.

143053521 is a deficient number, since it is larger than the sum of its proper divisors (74440623).

143053521 is a wasteful number, since it uses less digits than its factorization.

143053521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 215800.

The product of its (nonzero) digits is 1800, while the sum is 24.

The square root of 143053521 is about 11960.4983591822. The cubic root of 143053521 is about 522.9973847859.

The spelling of 143053521 in words is "one hundred forty-three million, fifty-three thousand, five hundred twenty-one".