2543500145 has 8 divisors (see below), whose sum is σ = 3052570920. Its totient is φ = 2034552960.

The previous prime is 2543500109. The next prime is 2543500159. The reversal of 2543500145 is 5410053452.

It can be written as a sum of positive squares in 4 ways, for example, as 950612224 + 1592887921 = 30832^2 + 39911^2 .

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

It is not a de Polignac number, because 2543500145 - 2¹⁰ = 2543499121 is a prime.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 22901 + ... + 74909.

It is an arithmetic number, because the mean of its divisors is an integer number (381571365).

Almost surely, 2^2543500145 is an apocalyptic number.

It is an amenable number.

2543500145 is a deficient number, since it is larger than the sum of its proper divisors (509070775).

2543500145 is an equidigital number, since it uses as much as digits as its factorization.

2543500145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61795.

The product of its (nonzero) digits is 12000, while the sum is 29.

The square root of 2543500145 is about 50433.1254732443. The cubic root of 2543500145 is about 1365.0354251117.

Adding to 2543500145 its reverse (5410053452), we get a palindrome (7953553597).

The spelling of 2543500145 in words is "two billion, five hundred forty-three million, five hundred thousand, one hundred forty-five".