2540011551 has 24 divisors (see below), whose sum is σ = 4254348672. Its totient is φ = 1319485200.

The previous prime is 2540011543. The next prime is 2540011597. The reversal of 2540011551 is 1551100452.

It is not a de Polignac number, because 2540011551 - 2³ = 2540011543 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2540011501) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 497265 + ... + 502346.

It is an arithmetic number, because the mean of its divisors is an integer number (177264528).

Almost surely, 2^2540011551 is an apocalyptic number.

2540011551 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

2540011551 is a deficient number, since it is larger than the sum of its proper divisors (1714337121).

2540011551 is a wasteful number, since it uses less digits than its factorization.

2540011551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 999643 (or 999632 counting only the distinct ones).

The product of its (nonzero) digits is 1000, while the sum is 24.

The square root of 2540011551 is about 50398.5272701495. The cubic root of 2540011551 is about 1364.4110580387.

It can be divided in two parts, 254001 and 1551, that added together give a palindrome (255552).

The spelling of 2540011551 in words is "two billion, five hundred forty million, eleven thousand, five hundred fifty-one".