6401022522 has 16 divisors (see below), whose sum is σ = 12802867392. Its totient is φ = 2133537120.

The previous prime is 6401022469. The next prime is 6401022547. The reversal of 6401022522 is 2252201046.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 6401022492 and 6401022501.

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, 121158 + ... + 165774.

It is an arithmetic number, because the mean of its divisors is an integer number (800179212).

Almost surely, 2^6401022522 is an apocalyptic number.

6401022522 is an abundant number, since it is smaller than the sum of its proper divisors (6401844870).

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

6401022522 is a wasteful number, since it uses less digits than its factorization.

6401022522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68533.

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 6401022522 is about 80006.3905072589. The cubic root of 6401022522 is about 1856.7344058192.

Adding to 6401022522 its reverse (2252201046), we get a palindrome (8653223568).

The spelling of 6401022522 in words is "six billion, four hundred one million, twenty-two thousand, five hundred twenty-two".