2005155552 has 24 divisors (see below), whose sum is σ = 5263533576. Its totient is φ = 668385152.

The previous prime is 2005155539. The next prime is 2005155587. The reversal of 2005155552 is 2555515002.

It is a tau number, because it is divible by the number of its divisors (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10443423 + ... + 10443614.

It is an arithmetic number, because the mean of its divisors is an integer number (219313899).

Almost surely, 2^2005155552 is an apocalyptic number.

It is an amenable number.

2005155552 is an abundant number, since it is smaller than the sum of its proper divisors (3258378024).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2005155552 is a wasteful number, since it uses less digits than its factorization.

2005155552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20887050 (or 20887042 counting only the distinct ones).

The product of its (nonzero) digits is 12500, while the sum is 30.

The square root of 2005155552 is about 44778.9632751809. The cubic root of 2005155552 is about 1261.0027190744.

The spelling of 2005155552 in words is "two billion, five million, one hundred fifty-five thousand, five hundred fifty-two".