2523778543 has 16 divisors (see below), whose sum is σ = 2977984800. Its totient is φ = 2108580480.

The previous prime is 2523778511. The next prime is 2523778553. The reversal of 2523778543 is 3458773252.

It is a cyclic number.

It is not a de Polignac number, because 2523778543 - 2⁵ = 2523778511 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2523778493 and 2523778502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2523778553) 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, 5788 + ... + 71281.

It is an arithmetic number, because the mean of its divisors is an integer number (186124050).

Almost surely, 2^2523778543 is an apocalyptic number.

2523778543 is a deficient number, since it is larger than the sum of its proper divisors (454206257).

2523778543 is a wasteful number, since it uses less digits than its factorization.

2523778543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77322.

The product of its digits is 1411200, while the sum is 46.

The square root of 2523778543 is about 50237.2226839820. Note that the first 3 decimals coincide. The cubic root of 2523778543 is about 1361.4982304792.

The spelling of 2523778543 in words is "two billion, five hundred twenty-three million, seven hundred seventy-eight thousand, five hundred forty-three".