255406751 has 2 divisors, whose sum is σ = 255406752. Its totient is φ = 255406750.

The previous prime is 255406733. The next prime is 255406829. The reversal of 255406751 is 157604552.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-255406751 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (255402751) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127703375 + 127703376.

It is an arithmetic number, because the mean of its divisors is an integer number (127703376).

Almost surely, 2^255406751 is an apocalyptic number.

255406751 is a deficient number, since it is larger than the sum of its proper divisors (1).

255406751 is an equidigital number, since it uses as much as digits as its factorization.

255406751 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 42000, while the sum is 35.

The square root of 255406751 is about 15981.4502157971. The cubic root of 255406751 is about 634.4695601266.

The spelling of 255406751 in words is "two hundred fifty-five million, four hundred six thousand, seven hundred fifty-one".