255719623 has 2 divisors, whose sum is σ = 255719624. Its totient is φ = 255719622.

The previous prime is 255719567. The next prime is 255719663. The reversal of 255719623 is 326917552.

It is an a-pointer prime, because the next prime (255719663) can be obtained adding 255719623 to its sum of digits (40).

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 255719623 - 2⁹ = 255719111 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (255719663) 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, 127859811 + 127859812.

It is an arithmetic number, because the mean of its divisors is an integer number (127859812).

Almost surely, 2^255719623 is an apocalyptic number.

255719623 is a deficient number, since it is larger than the sum of its proper divisors (1).

255719623 is an equidigital number, since it uses as much as digits as its factorization.

255719623 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 113400, while the sum is 40.

The square root of 255719623 is about 15991.2358184100. The cubic root of 255719623 is about 634.7285284292.

The spelling of 255719623 in words is "two hundred fifty-five million, seven hundred nineteen thousand, six hundred twenty-three".