2520164426 has 16 divisors (see below), whose sum is σ = 4071950568. Its totient is φ = 1162891200.

The previous prime is 2520164417. The next prime is 2520164443. The reversal of 2520164426 is 6244610252.

It can be written as a sum of positive squares in 4 ways, for example, as 778354201 + 1741810225 = 27899^2 + 41735^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2520164392 and 2520164401.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 153956 + ... + 169536.

Almost surely, 2^2520164426 is an apocalyptic number.

2520164426 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

2520164426 is a deficient number, since it is larger than the sum of its proper divisors (1551786142).

2520164426 is a wasteful number, since it uses less digits than its factorization.

2520164426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21817.

The product of its (nonzero) digits is 23040, while the sum is 32.

The square root of 2520164426 is about 50201.2392874917. The cubic root of 2520164426 is about 1360.8480196277.

Adding to 2520164426 its reverse (6244610252), we get a palindrome (8764774678).

The spelling of 2520164426 in words is "two billion, five hundred twenty million, one hundred sixty-four thousand, four hundred twenty-six".