10521543 has 16 divisors (see below), whose sum is σ = 14517216. Its totient is φ = 6773760.

The previous prime is 10521503. The next prime is 10521559. The reversal of 10521543 is 34512501.

It is not a de Polignac number, because 10521543 - 2⁹ = 10521031 is a prime.

It is a super-2 number, since 2×10521543² = 221405734201698, which contains 22 as substring.

It is a nialpdrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10521503) 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 15 ways as a sum of consecutive naturals, for example, 13521 + ... + 14277.

It is an arithmetic number, because the mean of its divisors is an integer number (907326).

Almost surely, 2^10521543 is an apocalyptic number.

10521543 is a deficient number, since it is larger than the sum of its proper divisors (3995673).

10521543 is a wasteful number, since it uses less digits than its factorization.

10521543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 914.

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 10521543 is about 3243.6928029639. The cubic root of 10521543 is about 219.1256133900.

The spelling of 10521543 in words is "ten million, five hundred twenty-one thousand, five hundred forty-three".