2520426213 has 10 divisors (see below), whose sum is σ = 3765081254. Its totient is φ = 1680284088.

The previous prime is 2520426197. The next prime is 2520426253. The reversal of 2520426213 is 3126240252.

It is a happy number.

2520426213 is a `hidden beast` number, since 2 + 5 + 20 + 426 + 213 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1609774884 + 910651329 = 40122^2 + 30177^2 .

It is not a de Polignac number, because 2520426213 - 2⁴ = 2520426197 is a prime.

It is a super-3 number, since 3×2520426213³ (a number of 29 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2520426253) 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 9 ways as a sum of consecutive naturals, for example, 15558106 + ... + 15558267.

Almost surely, 2^2520426213 is an apocalyptic number.

It is an amenable number.

2520426213 is a deficient number, since it is larger than the sum of its proper divisors (1244655041).

2520426213 is an equidigital number, since it uses as much as digits as its factorization.

2520426213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31116385 (or 31116376 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The square root of 2520426213 is about 50203.8465956544. The cubic root of 2520426213 is about 1360.8951382445.

Adding to 2520426213 its reverse (3126240252), we get a palindrome (5646666465).

The spelling of 2520426213 in words is "two billion, five hundred twenty million, four hundred twenty-six thousand, two hundred thirteen".