2520400513 has 4 divisors (see below), whose sum is σ = 2629983168. Its totient is φ = 2410817860.

The previous prime is 2520400499. The next prime is 2520400537. The reversal of 2520400513 is 3150040252.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2520400513 - 2¹³ = 2520392321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2520400543) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54791293 + ... + 54791338.

It is an arithmetic number, because the mean of its divisors is an integer number (657495792).

Almost surely, 2^2520400513 is an apocalyptic number.

2520400513 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

2520400513 is a deficient number, since it is larger than the sum of its proper divisors (109582655).

2520400513 is a wasteful number, since it uses less digits than its factorization.

2520400513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109582654.

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 2520400513 is about 50203.5906385191. The cubic root of 2520400513 is about 1360.8905126877.

Adding to 2520400513 its reverse (3150040252), we get a palindrome (5670440765).

The spelling of 2520400513 in words is "two billion, five hundred twenty million, four hundred thousand, five hundred thirteen".