2578531043 has 4 divisors (see below), whose sum is σ = 2812942968. Its totient is φ = 2344119120.

The previous prime is 2578530961. The next prime is 2578531057. The reversal of 2578531043 is 3401358752.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2578531043 - 2²⁸ = 2310095587 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2578530988 and 2578531006.

It is not an unprimeable number, because it can be changed into a prime (2578530043) 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, 117205946 + ... + 117205967.

It is an arithmetic number, because the mean of its divisors is an integer number (703235742).

Almost surely, 2^2578531043 is an apocalyptic number.

2578531043 is a deficient number, since it is larger than the sum of its proper divisors (234411925).

2578531043 is a wasteful number, since it uses less digits than its factorization.

2578531043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 234411924.

The product of its (nonzero) digits is 100800, while the sum is 38.

The square root of 2578531043 is about 50779.2383066150. The cubic root of 2578531043 is about 1371.2736203433.

Adding to 2578531043 its reverse (3401358752), we get a palindrome (5979889795).

The spelling of 2578531043 in words is "two billion, five hundred seventy-eight million, five hundred thirty-one thousand, forty-three".