2521026426 has 16 divisors (see below), whose sum is σ = 5043062304. Its totient is φ = 840173904.

The previous prime is 2521026397. The next prime is 2521026427. The reversal of 2521026426 is 6246201252.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 2521026393 and 2521026402.

It is not an unprimeable number, because it can be changed into a prime (2521026427) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7396 + ... + 71391.

It is an arithmetic number, because the mean of its divisors is an integer number (315191394).

Almost surely, 2^2521026426 is an apocalyptic number.

2521026426 is an abundant number, since it is smaller than the sum of its proper divisors (2522035878).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2521026426 is a wasteful number, since it uses less digits than its factorization.

2521026426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84125.

The product of its (nonzero) digits is 11520, while the sum is 30.

The square root of 2521026426 is about 50209.8239988949. The cubic root of 2521026426 is about 1361.0031572928.

Adding to 2521026426 its reverse (6246201252), we get a palindrome (8767227678).

The spelling of 2521026426 in words is "two billion, five hundred twenty-one million, twenty-six thousand, four hundred twenty-six".