1555224080 has 20 divisors (see below), whose sum is σ = 3615896172. Its totient is φ = 622089600.

The previous prime is 1555224079. The next prime is 1555224091. The reversal of 1555224080 is 804225551.

It can be written as a sum of positive squares in 2 ways, for example, as 802928896 + 752295184 = 28336^2 + 27428^2 .

It is a tau number, because it is divible by the number of its divisors (20).

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, 9720071 + ... + 9720230.

Almost surely, 2^1555224080 is an apocalyptic number.

1555224080 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1555224080 is an abundant number, since it is smaller than the sum of its proper divisors (2060672092).

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

1555224080 is a wasteful number, since it uses less digits than its factorization.

1555224080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19440314 (or 19440308 counting only the distinct ones).

The product of its (nonzero) digits is 16000, while the sum is 32.

The square root of 1555224080 is about 39436.3294438009. The cubic root of 1555224080 is about 1158.5932411729.

The spelling of 1555224080 in words is "one billion, five hundred fifty-five million, two hundred twenty-four thousand, eighty".