2520345145 has 4 divisors (see below), whose sum is σ = 3024414180. Its totient is φ = 2016276112.

The previous prime is 2520345133. The next prime is 2520345187. The reversal of 2520345145 is 5415430252.

2520345145 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1248067584 + 1272277561 = 35328^2 + 35669^2 .

It is a cyclic number.

It is not a de Polignac number, because 2520345145 - 2⁷ = 2520345017 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 252034510 + ... + 252034519.

It is an arithmetic number, because the mean of its divisors is an integer number (756103545).

Almost surely, 2^2520345145 is an apocalyptic number.

It is an amenable number.

2520345145 is a deficient number, since it is larger than the sum of its proper divisors (504069035).

2520345145 is an equidigital number, since it uses as much as digits as its factorization.

2520345145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 504069034.

The product of its (nonzero) digits is 24000, while the sum is 31.

The square root of 2520345145 is about 50203.0392008293. The cubic root of 2520345145 is about 1360.8805472956.

Adding to 2520345145 its reverse (5415430252), we get a palindrome (7935775397).

The spelling of 2520345145 in words is "two billion, five hundred twenty million, three hundred forty-five thousand, one hundred forty-five".