1555648085 has 16 divisors (see below), whose sum is σ = 1968624000. Its totient is φ = 1176860736.

The previous prime is 1555648049. The next prime is 1555648111. The reversal of 1555648085 is 5808465551.

It is a cyclic number.

It is not a de Polignac number, because 1555648085 - 2¹⁶ = 1555582549 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 15 ways as a sum of consecutive naturals, for example, 38216 + ... + 67614.

It is an arithmetic number, because the mean of its divisors is an integer number (123039000).

Almost surely, 2^1555648085 is an apocalyptic number.

It is an amenable number.

1555648085 is a deficient number, since it is larger than the sum of its proper divisors (412975915).

1555648085 is a wasteful number, since it uses less digits than its factorization.

1555648085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29980.

The product of its (nonzero) digits is 960000, while the sum is 47.

The square root of 1555648085 is about 39441.7048946924. The cubic root of 1555648085 is about 1158.6985217553.

The spelling of 1555648085 in words is "one billion, five hundred fifty-five million, six hundred forty-eight thousand, eighty-five".