255917055049 has 2 divisors, whose sum is σ = 255917055050. Its totient is φ = 255917055048.

The previous prime is 255917055011. The next prime is 255917055061. The reversal of 255917055049 is 940550719552.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 155961806400 + 99955248649 = 394920^2 + 316157^2 .

It is a cyclic number.

It is not a de Polignac number, because 255917055049 - 2⁹ = 255917054537 is a prime.

It is a super-4 number, since 4×255917055049⁴ (a number of 47 digits) contains 4444 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 255917054987 and 255917055005.

It is not a weakly prime, because it can be changed into another prime (255917005049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127958527524 + 127958527525.

It is an arithmetic number, because the mean of its divisors is an integer number (127958527525).

Almost surely, 2^255917055049 is an apocalyptic number.

It is an amenable number.

255917055049 is a deficient number, since it is larger than the sum of its proper divisors (1).

255917055049 is an equidigital number, since it uses as much as digits as its factorization.

255917055049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2835000, while the sum is 52.

The spelling of 255917055049 in words is "two hundred fifty-five billion, nine hundred seventeen million, fifty-five thousand, forty-nine".