2003555456 has 32 divisors (see below), whose sum is σ = 4561668480. Its totient is φ = 858666240.

The previous prime is 2003555423. The next prime is 2003555497. The reversal of 2003555456 is 6545553002.

It is a tau number, because it is divible by the number of its divisors (32).

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, 1117160 + ... + 1118951.

It is an arithmetic number, because the mean of its divisors is an integer number (142552140).

Almost surely, 2^2003555456 is an apocalyptic number.

It is an amenable number.

2003555456 is an abundant number, since it is smaller than the sum of its proper divisors (2558113024).

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

2003555456 is an equidigital number, since it uses as much as digits as its factorization.

2003555456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2236132 (or 2236120 counting only the distinct ones).

The product of its (nonzero) digits is 90000, while the sum is 35.

The square root of 2003555456 is about 44761.0931055085. The cubic root of 2003555456 is about 1260.6672068907.

The spelling of 2003555456 in words is "two billion, three million, five hundred fifty-five thousand, four hundred fifty-six".