10521887 has 2 divisors, whose sum is σ = 10521888. Its totient is φ = 10521886.

The previous prime is 10521869. The next prime is 10521893. The reversal of 10521887 is 78812501.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (78812501) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 10521887 - 2¹² = 10517791 is a prime.

It is a super-3 number, since 3×10521887³ (a number of 22 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10521587) 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, 5260943 + 5260944.

It is an arithmetic number, because the mean of its divisors is an integer number (5260944).

Almost surely, 2^10521887 is an apocalyptic number.

10521887 is a deficient number, since it is larger than the sum of its proper divisors (1).

10521887 is an equidigital number, since it uses as much as digits as its factorization.

10521887 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4480, while the sum is 32.

The square root of 10521887 is about 3243.7458285137. The cubic root of 10521887 is about 219.1280014551.

The spelling of 10521887 in words is "ten million, five hundred twenty-one thousand, eight hundred eighty-seven".