10857521 has 2 divisors, whose sum is σ = 10857522. Its totient is φ = 10857520.

The previous prime is 10857503. The next prime is 10857631. The reversal of 10857521 is 12575801.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10817521 + 40000 = 3289^2 + 200^2 .

It is a cyclic number.

It is not a de Polignac number, because 10857521 - 2¹⁰ = 10856497 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (10887521) 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 as a sum of consecutive naturals, namely, 5428760 + 5428761.

It is an arithmetic number, because the mean of its divisors is an integer number (5428761).

Almost surely, 2^10857521 is an apocalyptic number.

It is an amenable number.

10857521 is a deficient number, since it is larger than the sum of its proper divisors (1).

10857521 is an equidigital number, since it uses as much as digits as its factorization.

10857521 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2800, while the sum is 29.

The square root of 10857521 is about 3295.0752646943. The cubic root of 10857521 is about 221.4336196857.

The spelling of 10857521 in words is "ten million, eight hundred fifty-seven thousand, five hundred twenty-one".