256101751 has 2 divisors, whose sum is σ = 256101752. Its totient is φ = 256101750.

The previous prime is 256101749. The next prime is 256101763. The reversal of 256101751 is 157101652.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 256101751 - 2¹ = 256101749 is a prime.

Together with 256101749, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (256101151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128050875 + 128050876.

It is an arithmetic number, because the mean of its divisors is an integer number (128050876).

Almost surely, 2^256101751 is an apocalyptic number.

256101751 is a deficient number, since it is larger than the sum of its proper divisors (1).

256101751 is an equidigital number, since it uses as much as digits as its factorization.

256101751 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2100, while the sum is 28.

The square root of 256101751 is about 16003.1794028562. The cubic root of 256101751 is about 635.0445344590.

Subtracting from 256101751 its reverse (157101652), we obtain a palindrome (99000099).

The spelling of 256101751 in words is "two hundred fifty-six million, one hundred one thousand, seven hundred fifty-one".