255601573 has 2 divisors, whose sum is σ = 255601574. Its totient is φ = 255601572.

The previous prime is 255601559. The next prime is 255601601. The reversal of 255601573 is 375106552.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 252905409 + 2696164 = 15903^2 + 1642^2 .

It is a cyclic number.

It is not a de Polignac number, because 255601573 - 2¹³ = 255593381 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (255601523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127800786 + 127800787.

It is an arithmetic number, because the mean of its divisors is an integer number (127800787).

Almost surely, 2^255601573 is an apocalyptic number.

It is an amenable number.

255601573 is a deficient number, since it is larger than the sum of its proper divisors (1).

255601573 is an equidigital number, since it uses as much as digits as its factorization.

255601573 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31500, while the sum is 34.

The square root of 255601573 is about 15987.5443079918. The cubic root of 255601573 is about 634.6308417063.

The spelling of 255601573 in words is "two hundred fifty-five million, six hundred one thousand, five hundred seventy-three".