2045207556 has 72 divisors (see below), whose sum is σ = 6127226560. Its totient is φ = 584343072.

The previous prime is 2045207543. The next prime is 2045207561. The reversal of 2045207556 is 6557025402.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 2045207556.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 143491 + ... + 157098.

Almost surely, 2^2045207556 is an apocalyptic number.

It is an amenable number.

2045207556 is an abundant number, since it is smaller than the sum of its proper divisors (4082019004).

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

2045207556 is a wasteful number, since it uses less digits than its factorization.

2045207556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 300615 (or 300601 counting only the distinct ones).

The product of its (nonzero) digits is 84000, while the sum is 36.

The square root of 2045207556 is about 45223.9710330705. The cubic root of 2045207556 is about 1269.3434008528.

The spelling of 2045207556 in words is "two billion, forty-five million, two hundred seven thousand, five hundred fifty-six".