555056491 has 16 divisors (see below), whose sum is σ = 628185600. Its totient is φ = 485805600.

The previous prime is 555056471. The next prime is 555056501. The reversal of 555056491 is 194650555.

It is a cyclic number.

It is not a de Polignac number, because 555056491 - 2⁷ = 555056363 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (555056431) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 118606 + ... + 123196.

It is an arithmetic number, because the mean of its divisors is an integer number (39261600).

Almost surely, 2^555056491 is an apocalyptic number.

555056491 is a deficient number, since it is larger than the sum of its proper divisors (73129109).

555056491 is a wasteful number, since it uses less digits than its factorization.

555056491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5010.

The product of its (nonzero) digits is 135000, while the sum is 40.

The square root of 555056491 is about 23559.6369029745. The cubic root of 555056491 is about 821.8244578903.

The spelling of 555056491 in words is "five hundred fifty-five million, fifty-six thousand, four hundred ninety-one".