2540512551 has 4 divisors (see below), whose sum is σ = 3387350072. Its totient is φ = 1693675032.

The previous prime is 2540512543. The next prime is 2540512571. The reversal of 2540512551 is 1552150452.

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

It is not a de Polignac number, because 2540512551 - 2³ = 2540512543 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2540512571) 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 3 ways as a sum of consecutive naturals, for example, 423418756 + ... + 423418761.

It is an arithmetic number, because the mean of its divisors is an integer number (846837518).

Almost surely, 2^2540512551 is an apocalyptic number.

2540512551 is a deficient number, since it is larger than the sum of its proper divisors (846837521).

2540512551 is an equidigital number, since it uses as much as digits as its factorization.

2540512551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 846837520.

The product of its (nonzero) digits is 10000, while the sum is 30.

The square root of 2540512551 is about 50403.4974084140. The cubic root of 2540512551 is about 1364.5007590746.

The spelling of 2540512551 in words is "two billion, five hundred forty million, five hundred twelve thousand, five hundred fifty-one".