255243101 has 2 divisors, whose sum is σ = 255243102. Its totient is φ = 255243100.

The previous prime is 255243091. The next prime is 255243139. The reversal of 255243101 is 101342552.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 252778201 + 2464900 = 15899^2 + 1570^2 .

It is a cyclic number.

It is not a de Polignac number, because 255243101 - 2¹⁰ = 255242077 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (255243161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127621550 + 127621551.

It is an arithmetic number, because the mean of its divisors is an integer number (127621551).

Almost surely, 2^255243101 is an apocalyptic number.

It is an amenable number.

255243101 is a deficient number, since it is larger than the sum of its proper divisors (1).

255243101 is an equidigital number, since it uses as much as digits as its factorization.

255243101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 255243101 is about 15976.3293969547. The cubic root of 255243101 is about 634.3340206035.

Adding to 255243101 its reverse (101342552), we get a palindrome (356585653).

The spelling of 255243101 in words is "two hundred fifty-five million, two hundred forty-three thousand, one hundred one".