2540343541 has 8 divisors (see below), whose sum is σ = 2690325144. Its totient is φ = 2390423040.

The previous prime is 2540343527. The next prime is 2540343593. The reversal of 2540343541 is 1453430452.

It can be written as a sum of positive squares in 4 ways, for example, as 64883025 + 2475460516 = 8055^2 + 49754^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2540343541 - 2⁷ = 2540343413 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 (2540343511) 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 7 ways as a sum of consecutive naturals, for example, 91851 + ... + 116263.

It is an arithmetic number, because the mean of its divisors is an integer number (336290643).

Almost surely, 2^2540343541 is an apocalyptic number.

It is an amenable number.

2540343541 is a deficient number, since it is larger than the sum of its proper divisors (149981603).

2540343541 is a wasteful number, since it uses less digits than its factorization.

2540343541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30551.

The product of its (nonzero) digits is 28800, while the sum is 31.

The square root of 2540343541 is about 50401.8208103636. The cubic root of 2540343541 is about 1364.4705001692.

Adding to 2540343541 its reverse (1453430452), we get a palindrome (3993773993).

The spelling of 2540343541 in words is "two billion, five hundred forty million, three hundred forty-three thousand, five hundred forty-one".