255818951 has 2 divisors, whose sum is σ = 255818952. Its totient is φ = 255818950.

The previous prime is 255818923. The next prime is 255818957. The reversal of 255818951 is 159818552.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 255818951 - 2⁶ = 255818887 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (255818957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127909475 + 127909476.

It is an arithmetic number, because the mean of its divisors is an integer number (127909476).

Almost surely, 2^255818951 is an apocalyptic number.

255818951 is a deficient number, since it is larger than the sum of its proper divisors (1).

255818951 is an equidigital number, since it uses as much as digits as its factorization.

255818951 is an evil number, because the sum of its binary digits is even.

The product of its digits is 144000, while the sum is 44.

The square root of 255818951 is about 15994.3412180683. The cubic root of 255818951 is about 634.8106993545.

The spelling of 255818951 in words is "two hundred fifty-five million, eight hundred eighteen thousand, nine hundred fifty-one".