555555499 has 2 divisors, whose sum is σ = 555555500. Its totient is φ = 555555498.

The previous prime is 555555479. The next prime is 555555503. The reversal of 555555499 is 994555555.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 555555499 - 2²⁹ = 18684587 is a prime.

It is not a weakly prime, because it can be changed into another prime (555555479) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 277777749 + 277777750.

It is an arithmetic number, because the mean of its divisors is an integer number (277777750).

Almost surely, 2^555555499 is an apocalyptic number.

555555499 is a deficient number, since it is larger than the sum of its proper divisors (1).

555555499 is an equidigital number, since it uses as much as digits as its factorization.

555555499 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5062500, while the sum is 52.

The square root of 555555499 is about 23570.2248398270. The cubic root of 555555499 is about 822.0706635479.

The spelling of 555555499 in words is "five hundred fifty-five million, five hundred fifty-five thousand, four hundred ninety-nine".