2543242551 has 48 divisors (see below), whose sum is σ = 3783218400. Its totient is φ = 1512462336.

The previous prime is 2543242489. The next prime is 2543242553. The reversal of 2543242551 is 1552423452.

It is a happy number.

It is not a de Polignac number, because 2543242551 - 2¹³ = 2543234359 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2543242553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 18296640 + ... + 18296778.

It is an arithmetic number, because the mean of its divisors is an integer number (78817050).

Almost surely, 2^2543242551 is an apocalyptic number.

2543242551 is a deficient number, since it is larger than the sum of its proper divisors (1239975849).

2543242551 is a wasteful number, since it uses less digits than its factorization.

2543242551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 416 (or 277 counting only the distinct ones).

The product of its digits is 48000, while the sum is 33.

The square root of 2543242551 is about 50430.5715910498. The cubic root of 2543242551 is about 1364.9893420521.

The spelling of 2543242551 in words is "two billion, five hundred forty-three million, two hundred forty-two thousand, five hundred fifty-one".