1553320055 has 32 divisors (see below), whose sum is σ = 2199149568. Its totient is φ = 1031097600.

The previous prime is 1553320009. The next prime is 1553320063. The reversal of 1553320055 is 5500233551.

It is not a de Polignac number, because 1553320055 - 2²⁶ = 1486211191 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 (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 183854 + ... + 192116.

It is an arithmetic number, because the mean of its divisors is an integer number (68723424).

Almost surely, 2^1553320055 is an apocalyptic number.

1553320055 is a deficient number, since it is larger than the sum of its proper divisors (645829513).

1553320055 is a wasteful number, since it uses less digits than its factorization.

1553320055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8447.

The product of its (nonzero) digits is 11250, while the sum is 29.

The square root of 1553320055 is about 39412.1815559606. The cubic root of 1553320055 is about 1158.1202350887.

The spelling of 1553320055 in words is "one billion, five hundred fifty-three million, three hundred twenty thousand, fifty-five".