2543546481 has 16 divisors (see below), whose sum is σ = 3900572544. Its totient is φ = 1444195584.

The previous prime is 2543546459. The next prime is 2543546531. The reversal of 2543546481 is 1846453452.

It is not a de Polignac number, because 2543546481 - 2⁶ = 2543546417 is a prime.

It is a super-2 number, since 2×2543546481² = 12939257402014966722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2543546441) 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 15 ways as a sum of consecutive naturals, for example, 382440 + ... + 389033.

It is an arithmetic number, because the mean of its divisors is an integer number (243785784).

Almost surely, 2^2543546481 is an apocalyptic number.

2543546481 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2543546481 is a deficient number, since it is larger than the sum of its proper divisors (1357026063).

2543546481 is a wasteful number, since it uses less digits than its factorization.

2543546481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 771640.

The product of its digits is 460800, while the sum is 42.

The square root of 2543546481 is about 50433.5848517632. The cubic root of 2543546481 is about 1365.0437142007.

The spelling of 2543546481 in words is "two billion, five hundred forty-three million, five hundred forty-six thousand, four hundred eighty-one".