2540622243 has 8 divisors (see below), whose sum is σ = 3392767168. Its totient is φ = 1691112744.

The previous prime is 2540622233. The next prime is 2540622283. The reversal of 2540622243 is 3422260452.

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

It is not a de Polignac number, because 2540622243 - 2⁵ = 2540622211 is a prime.

It is a super-2 number, since 2×2540622243² = 12909522763252702098, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2540622243.

It is not an unprimeable number, because it can be changed into a prime (2540622223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 656605 + ... + 660462.

It is an arithmetic number, because the mean of its divisors is an integer number (424095896).

Almost surely, 2^2540622243 is an apocalyptic number.

2540622243 is a deficient number, since it is larger than the sum of its proper divisors (852144925).

2540622243 is a wasteful number, since it uses less digits than its factorization.

2540622243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1317713.

The product of its (nonzero) digits is 23040, while the sum is 30.

The square root of 2540622243 is about 50404.5855354451. The cubic root of 2540622243 is about 1364.5203971936.

Adding to 2540622243 its reverse (3422260452), we get a palindrome (5962882695).

The spelling of 2540622243 in words is "two billion, five hundred forty million, six hundred twenty-two thousand, two hundred forty-three".