255634513 has 2 divisors, whose sum is σ = 255634514. Its totient is φ = 255634512.

The previous prime is 255634471. The next prime is 255634537. The reversal of 255634513 is 315436552.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 252905409 + 2729104 = 15903^2 + 1652^2 .

It is a cyclic number.

It is not a de Polignac number, because 255634513 - 2¹³ = 255626321 is a prime.

It is not a weakly prime, because it can be changed into another prime (255634583) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127817256 + 127817257.

It is an arithmetic number, because the mean of its divisors is an integer number (127817257).

Almost surely, 2^255634513 is an apocalyptic number.

It is an amenable number.

255634513 is a deficient number, since it is larger than the sum of its proper divisors (1).

255634513 is an equidigital number, since it uses as much as digits as its factorization.

255634513 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 54000, while the sum is 34.

The square root of 255634513 is about 15988.5744517765. The cubic root of 255634513 is about 634.6581026783.

The spelling of 255634513 in words is "two hundred fifty-five million, six hundred thirty-four thousand, five hundred thirteen".