255623653 has 2 divisors, whose sum is σ = 255623654. Its totient is φ = 255623652.

The previous prime is 255623629. The next prime is 255623699. The reversal of 255623653 is 356326552.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 147816964 + 107806689 = 12158^2 + 10383^2 .

It is a cyclic number.

It is not a de Polignac number, because 255623653 - 2⁹ = 255623141 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (255623623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127811826 + 127811827.

It is an arithmetic number, because the mean of its divisors is an integer number (127811827).

Almost surely, 2^255623653 is an apocalyptic number.

It is an amenable number.

255623653 is a deficient number, since it is larger than the sum of its proper divisors (1).

255623653 is an equidigital number, since it uses as much as digits as its factorization.

255623653 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 162000, while the sum is 37.

The square root of 255623653 is about 15988.2348306497. The cubic root of 255623653 is about 634.6491152577.

The spelling of 255623653 in words is "two hundred fifty-five million, six hundred twenty-three thousand, six hundred fifty-three".