10256621 has 2 divisors, whose sum is σ = 10256622. Its totient is φ = 10256620.

The previous prime is 10256579. The next prime is 10256663. The reversal of 10256621 is 12665201.

It is a balanced prime because it is at equal distance from previous prime (10256579) and next prime (10256663).

It can be written as a sum of positive squares in only one way, i.e., 8934121 + 1322500 = 2989^2 + 1150^2 .

It is a cyclic number.

It is not a de Polignac number, because 10256621 - 2⁶ = 10256557 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10256821) 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, 5128310 + 5128311.

It is an arithmetic number, because the mean of its divisors is an integer number (5128311).

Almost surely, 2^10256621 is an apocalyptic number.

It is an amenable number.

10256621 is a deficient number, since it is larger than the sum of its proper divisors (1).

10256621 is an equidigital number, since it uses as much as digits as its factorization.

10256621 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 10256621 is about 3202.5959782651. The cubic root of 10256621 is about 217.2708362731.

The spelling of 10256621 in words is "ten million, two hundred fifty-six thousand, six hundred twenty-one".