255843953 has 2 divisors, whose sum is σ = 255843954. Its totient is φ = 255843952.

The previous prime is 255843941. The next prime is 255843971. The reversal of 255843953 is 359348552.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 198584464 + 57259489 = 14092^2 + 7567^2 .

It is a cyclic number.

It is not a de Polignac number, because 255843953 - 2¹⁰ = 255842929 is a prime.

It is a super-2 number, since 2×255843953² = 130912256573332418, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (255843923) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127921976 + 127921977.

It is an arithmetic number, because the mean of its divisors is an integer number (127921977).

Almost surely, 2^255843953 is an apocalyptic number.

It is an amenable number.

255843953 is a deficient number, since it is larger than the sum of its proper divisors (1).

255843953 is an equidigital number, since it uses as much as digits as its factorization.

255843953 is an evil number, because the sum of its binary digits is even.

The product of its digits is 648000, while the sum is 44.

The square root of 255843953 is about 15995.1227879001. The cubic root of 255843953 is about 634.8313793706.

The spelling of 255843953 in words is "two hundred fifty-five million, eight hundred forty-three thousand, nine hundred fifty-three".