2543551136 has 96 divisors (see below), whose sum is σ = 5889945600. Its totient is φ = 1058593536.

The previous prime is 2543551121. The next prime is 2543551139. The reversal of 2543551136 is 6311553452.

It is a junction number, because it is equal to n+sod(n) for n = 2543551096 and 2543551105.

It is not an unprimeable number, because it can be changed into a prime (2543551139) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1916105 + ... + 1917431.

It is an arithmetic number, because the mean of its divisors is an integer number (61353600).

Almost surely, 2^2543551136 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2543551136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2944972800).

2543551136 is an abundant number, since it is smaller than the sum of its proper divisors (3346394464).

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

2543551136 is a wasteful number, since it uses less digits than its factorization.

2543551136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1586 (or 1578 counting only the distinct ones).

The product of its digits is 54000, while the sum is 35.

The square root of 2543551136 is about 50433.6310015450. The cubic root of 2543551136 is about 1365.0445469323.

The spelling of 2543551136 in words is "two billion, five hundred forty-three million, five hundred fifty-one thousand, one hundred thirty-six".