555505555 has 24 divisors (see below), whose sum is σ = 740052432. Its totient is φ = 399960000.

The previous prime is 555505537. The next prime is 555505571.

555505555 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 555505555 - 2⁷ = 555505427 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 56560 + ... + 65650.

It is an arithmetic number, because the mean of its divisors is an integer number (30835518).

Almost surely, 2^555505555 is an apocalyptic number.

555505555 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

555505555 is a deficient number, since it is larger than the sum of its proper divisors (184546877).

555505555 is a wasteful number, since it uses less digits than its factorization.

555505555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9219 (or 9208 counting only the distinct ones).

The product of its (nonzero) digits is 390625, while the sum is 40.

The square root of 555505555 is about 23569.1653437282. The cubic root of 555505555 is about 822.0460283088.

The spelling of 555505555 in words is "five hundred fifty-five million, five hundred five thousand, five hundred fifty-five".