255122137 has 2 divisors, whose sum is σ = 255122138. Its totient is φ = 255122136.

The previous prime is 255122117. The next prime is 255122159. The reversal of 255122137 is 731221552.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 233814681 + 21307456 = 15291^2 + 4616^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-255122137 is a prime.

It is not a weakly prime, because it can be changed into another prime (255122117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127561068 + 127561069.

It is an arithmetic number, because the mean of its divisors is an integer number (127561069).

Almost surely, 2^255122137 is an apocalyptic number.

It is an amenable number.

255122137 is a deficient number, since it is larger than the sum of its proper divisors (1).

255122137 is an equidigital number, since it uses as much as digits as its factorization.

255122137 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4200, while the sum is 28.

The square root of 255122137 is about 15972.5432226681. The cubic root of 255122137 is about 634.2337975810.

Adding to 255122137 its reverse (731221552), we get a palindrome (986343689).

The spelling of 255122137 in words is "two hundred fifty-five million, one hundred twenty-two thousand, one hundred thirty-seven".