256121627 has 2 divisors, whose sum is σ = 256121628. Its totient is φ = 256121626.

The previous prime is 256121611. The next prime is 256121639. The reversal of 256121627 is 726121652.

256121627 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 256121627 - 2⁴ = 256121611 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 256121593 and 256121602.

It is not a weakly prime, because it can be changed into another prime (256121647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128060813 + 128060814.

It is an arithmetic number, because the mean of its divisors is an integer number (128060814).

Almost surely, 2^256121627 is an apocalyptic number.

256121627 is a deficient number, since it is larger than the sum of its proper divisors (1).

256121627 is an equidigital number, since it uses as much as digits as its factorization.

256121627 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10080, while the sum is 32.

The square root of 256121627 is about 16003.8003924068. The cubic root of 256121627 is about 635.0609625891.

The spelling of 256121627 in words is "two hundred fifty-six million, one hundred twenty-one thousand, six hundred twenty-seven".