555155663 has 2 divisors, whose sum is σ = 555155664. Its totient is φ = 555155662.

The previous prime is 555155651. The next prime is 555155677. The reversal of 555155663 is 366551555.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 555155663 - 2¹⁶ = 555090127 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 555155663.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (555155633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 277577831 + 277577832.

It is an arithmetic number, because the mean of its divisors is an integer number (277577832).

Almost surely, 2^555155663 is an apocalyptic number.

555155663 is a deficient number, since it is larger than the sum of its proper divisors (1).

555155663 is an equidigital number, since it uses as much as digits as its factorization.

555155663 is an evil number, because the sum of its binary digits is even.

The product of its digits is 337500, while the sum is 41.

The square root of 555155663 is about 23561.7415103383. The cubic root of 555155663 is about 821.8734001289.

The spelling of 555155663 in words is "five hundred fifty-five million, one hundred fifty-five thousand, six hundred sixty-three".