6404022553 has 16 divisors (see below), whose sum is σ = 6932597760. Its totient is φ = 5892604416.

The previous prime is 6404022539. The next prime is 6404022623. The reversal of 6404022553 is 3552204046.

It is a cyclic number.

It is not a de Polignac number, because 6404022553 - 2⁹ = 6404022041 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6404022853) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 821488 + ... + 829246.

It is an arithmetic number, because the mean of its divisors is an integer number (433287360).

Almost surely, 2^6404022553 is an apocalyptic number.

It is an amenable number.

6404022553 is a deficient number, since it is larger than the sum of its proper divisors (528575207).

6404022553 is a wasteful number, since it uses less digits than its factorization.

6404022553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8856.

The product of its (nonzero) digits is 28800, while the sum is 31.

The square root of 6404022553 is about 80025.1370070680. The cubic root of 6404022553 is about 1857.0244319185.

Adding to 6404022553 its reverse (3552204046), we get a palindrome (9956226599).

The spelling of 6404022553 in words is "six billion, four hundred four million, twenty-two thousand, five hundred fifty-three".