2055431720 has 16 divisors (see below), whose sum is σ = 4624721460. Its totient is φ = 822172672.

The previous prime is 2055431711. The next prime is 2055431747. The reversal of 2055431720 is 271345502.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1681164004 + 374267716 = 41002^2 + 19346^2 .

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, 25692857 + ... + 25692936.

Almost surely, 2^2055431720 is an apocalyptic number.

2055431720 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2055431720 is an abundant number, since it is smaller than the sum of its proper divisors (2569289740).

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

2055431720 is a wasteful number, since it uses less digits than its factorization.

2055431720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51385804 (or 51385800 counting only the distinct ones).

The product of its (nonzero) digits is 8400, while the sum is 29.

The square root of 2055431720 is about 45336.8693228811. The cubic root of 2055431720 is about 1271.4550706328.

The spelling of 2055431720 in words is "two billion, fifty-five million, four hundred thirty-one thousand, seven hundred twenty".