1556606055 has 16 divisors (see below), whose sum is σ = 2491259904. Its totient is φ = 829959840.

The previous prime is 1556606047. The next prime is 1556606099. The reversal of 1556606055 is 5506066551.

It is not a de Polignac number, because 1556606055 - 2³ = 1556606047 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51202 + ... + 75728.

It is an arithmetic number, because the mean of its divisors is an integer number (155703744).

Almost surely, 2^1556606055 is an apocalyptic number.

1556606055 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1556606055 is a deficient number, since it is larger than the sum of its proper divisors (934653849).

1556606055 is a wasteful number, since it uses less digits than its factorization.

1556606055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28766.

The product of its (nonzero) digits is 135000, while the sum is 39.

The square root of 1556606055 is about 39453.8471508166. The cubic root of 1556606055 is about 1158.9363156080.

The spelling of 1556606055 in words is "one billion, five hundred fifty-six million, six hundred six thousand, fifty-five".