10143521 has 4 divisors (see below), whose sum is σ = 10272000. Its totient is φ = 10015044.

The previous prime is 10143517. The next prime is 10143547. The reversal of 10143521 is 12534101.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 12534101 = 47 ⋅266683.

It is a cyclic number.

It is not a de Polignac number, because 10143521 - 2² = 10143517 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 10143521.

It is not an unprimeable number, because it can be changed into a prime (10143821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64121 + ... + 64278.

It is an arithmetic number, because the mean of its divisors is an integer number (2568000).

Almost surely, 2^10143521 is an apocalyptic number.

It is an amenable number.

10143521 is a deficient number, since it is larger than the sum of its proper divisors (128479).

10143521 is an equidigital number, since it uses as much as digits as its factorization.

10143521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128478.

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 10143521 is about 3184.8894800291. The cubic root of 10143521 is about 216.4692658344.

Adding to 10143521 its reverse (12534101), we get a palindrome (22677622).

The spelling of 10143521 in words is "ten million, one hundred forty-three thousand, five hundred twenty-one".