255523573 has 2 divisors, whose sum is σ = 255523574. Its totient is φ = 255523572.

The previous prime is 255523531. The next prime is 255523589. The reversal of 255523573 is 375325552.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 169442289 + 86081284 = 13017^2 + 9278^2 .

It is a cyclic number.

It is not a de Polignac number, because 255523573 - 2²¹ = 253426421 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (255523523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127761786 + 127761787.

It is an arithmetic number, because the mean of its divisors is an integer number (127761787).

Almost surely, 2^255523573 is an apocalyptic number.

It is an amenable number.

255523573 is a deficient number, since it is larger than the sum of its proper divisors (1).

255523573 is an equidigital number, since it uses as much as digits as its factorization.

255523573 is an evil number, because the sum of its binary digits is even.

The product of its digits is 157500, while the sum is 37.

The square root of 255523573 is about 15985.1047228349. The cubic root of 255523573 is about 634.5662799729.

The spelling of 255523573 in words is "two hundred fifty-five million, five hundred twenty-three thousand, five hundred seventy-three".