2543410861 has 4 divisors (see below), whose sum is σ = 2553544224. Its totient is φ = 2533277500.

The previous prime is 2543410853. The next prime is 2543410873. The reversal of 2543410861 is 1680143452.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2543410861 - 2³ = 2543410853 is a prime.

It is a super-2 number, since 2×2543410861² = 12937877615705522642, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2543410811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5066305 + ... + 5066806.

It is an arithmetic number, because the mean of its divisors is an integer number (638386056).

Almost surely, 2^2543410861 is an apocalyptic number.

It is an amenable number.

2543410861 is a deficient number, since it is larger than the sum of its proper divisors (10133363).

2543410861 is a wasteful number, since it uses less digits than its factorization.

2543410861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10133362.

The product of its (nonzero) digits is 23040, while the sum is 34.

The square root of 2543410861 is about 50432.2402932886. The cubic root of 2543410861 is about 1365.0194527321.

The spelling of 2543410861 in words is "two billion, five hundred forty-three million, four hundred ten thousand, eight hundred sixty-one".