1255555541 has 2 divisors, whose sum is σ = 1255555542. Its totient is φ = 1255555540.

The previous prime is 1255555537. The next prime is 1255555571. The reversal of 1255555541 is 1455555521.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1106959441 + 148596100 = 33271^2 + 12190^2 .

It is a cyclic number.

It is not a de Polignac number, because 1255555541 - 2² = 1255555537 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1255555495 and 1255555504.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1255555501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 627777770 + 627777771.

It is an arithmetic number, because the mean of its divisors is an integer number (627777771).

Almost surely, 2^1255555541 is an apocalyptic number.

It is an amenable number.

1255555541 is a deficient number, since it is larger than the sum of its proper divisors (1).

1255555541 is an equidigital number, since it uses as much as digits as its factorization.

1255555541 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 125000, while the sum is 38.

The square root of 1255555541 is about 35433.8191703914. The cubic root of 1255555541 is about 1078.8108599527.

The spelling of 1255555541 in words is "one billion, two hundred fifty-five million, five hundred fifty-five thousand, five hundred forty-one".