2056531801 has 9 divisors (see below), whose sum is σ = 2081731453. Its totient is φ = 2031635200.

The previous prime is 2056531793. The next prime is 2056531831. The reversal of 2056531801 is 1081356502.

The square root of 2056531801 is 45349.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 849664201 + 1206867600 = 29149^2 + 34740^2 .

It is not a de Polignac number, because 2056531801 - 2³ = 2056531793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2056531831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 4580025 + ... + 4580473.

Almost surely, 2^2056531801 is an apocalyptic number.

2056531801 is the 45349-th square number.

2056531801 is the 22675-th centered octagonal number.

It is an amenable number.

2056531801 is a deficient number, since it is larger than the sum of its proper divisors (25199652).

2056531801 is an frugal number, since it uses more digits than its factorization.

2056531801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1100 (or 550 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 31.

The cubic root of 2056531801 is about 1271.6818606374.

The spelling of 2056531801 in words is "two billion, fifty-six million, five hundred thirty-one thousand, eight hundred one".