2553271861 has 6 divisors (see below), whose sum is σ = 2970132630. Its totient is φ = 2188518696.

The previous prime is 2553271823. The next prime is 2553271921. The reversal of 2553271861 is 1681723552.

It can be written as a sum of positive squares in only one way, i.e., 2552169361 + 1102500 = 50519^2 + 1050^2 .

It is not a de Polignac number, because 2553271861 - 2²⁵ = 2519717429 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2553271811) 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 5 ways as a sum of consecutive naturals, for example, 26053746 + ... + 26053843.

It is an arithmetic number, because the mean of its divisors is an integer number (495022105).

Almost surely, 2^2553271861 is an apocalyptic number.

It is an amenable number.

2553271861 is a deficient number, since it is larger than the sum of its proper divisors (416860769).

2553271861 is an equidigital number, since it uses as much as digits as its factorization.

2553271861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52107603 (or 52107596 counting only the distinct ones).

The product of its digits is 100800, while the sum is 40.

The square root of 2553271861 is about 50529.9105580051. The cubic root of 2553271861 is about 1366.7812730052.

The spelling of 2553271861 in words is "two billion, five hundred fifty-three million, two hundred seventy-one thousand, eight hundred sixty-one".