2543504420 has 12 divisors (see below), whose sum is σ = 5341359324. Its totient is φ = 1017401760.

The previous prime is 2543504417. The next prime is 2543504423. The reversal of 2543504420 is 244053452.

It is an interprime number because it is at equal distance from previous prime (2543504417) and next prime (2543504423).

It can be written as a sum of positive squares in 2 ways, for example, as 1699253284 + 844251136 = 41222^2 + 29056^2 .

It is not an unprimeable number, because it can be changed into a prime (2543504423) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63587591 + ... + 63587630.

It is an arithmetic number, because the mean of its divisors is an integer number (445113277).

Almost surely, 2^2543504420 is an apocalyptic number.

2543504420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2543504420 is an abundant number, since it is smaller than the sum of its proper divisors (2797854904).

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

2543504420 is a wasteful number, since it uses less digits than its factorization.

2543504420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127175230 (or 127175228 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 29.

The square root of 2543504420 is about 50433.1678560846. The cubic root of 2543504420 is about 1365.0361898745.

Adding to 2543504420 its reverse (244053452), we get a palindrome (2787557872).

The spelling of 2543504420 in words is "two billion, five hundred forty-three million, five hundred four thousand, four hundred twenty".