2543351540 has 24 divisors (see below), whose sum is σ = 5341988232. Its totient is φ = 1017159680.

The previous prime is 2543351537. The next prime is 2543351567. The reversal of 2543351540 is 451533452.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 417957136 + 2125394404 = 20444^2 + 46102^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2543351497 and 2543351506.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 203060 + ... + 215220.

It is an arithmetic number, because the mean of its divisors is an integer number (222582843).

Almost surely, 2^2543351540 is an apocalyptic number.

2543351540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2543351540 is an abundant number, since it is smaller than the sum of its proper divisors (2798636692).

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

2543351540 is a wasteful number, since it uses less digits than its factorization.

2543351540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22627 (or 22625 counting only the distinct ones).

The product of its (nonzero) digits is 36000, while the sum is 32.

The square root of 2543351540 is about 50431.6521640923. The cubic root of 2543351540 is about 1365.0088403494.

Adding to 2543351540 its reverse (451533452), we get a palindrome (2994884992).

The spelling of 2543351540 in words is "two billion, five hundred forty-three million, three hundred fifty-one thousand, five hundred forty".