10521659251 has 2 divisors, whose sum is σ = 10521659252. Its totient is φ = 10521659250.

The previous prime is 10521659249. The next prime is 10521659333. The reversal of 10521659251 is 15295612501.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 10521659251 - 2¹ = 10521659249 is a prime.

It is a super-2 number, since 2×10521659251² (a number of 21 digits) contains 22 as substring.

Together with 10521659249, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 10521659251.

It is not a weakly prime, because it can be changed into another prime (10521659221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5260829625 + 5260829626.

It is an arithmetic number, because the mean of its divisors is an integer number (5260829626).

Almost surely, 2^10521659251 is an apocalyptic number.

10521659251 is a deficient number, since it is larger than the sum of its proper divisors (1).

10521659251 is an equidigital number, since it uses as much as digits as its factorization.

10521659251 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27000, while the sum is 37.

The spelling of 10521659251 in words is "ten billion, five hundred twenty-one million, six hundred fifty-nine thousand, two hundred fifty-one".