6404252551 has 8 divisors (see below), whose sum is σ = 6500614064. Its totient is φ = 6308124480.

The previous prime is 6404252531. The next prime is 6404252557. The reversal of 6404252551 is 1552524046.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6404252551 - 2⁹ = 6404252039 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6404252557) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2685 + ... + 113206.

It is an arithmetic number, because the mean of its divisors is an integer number (812576758).

Almost surely, 2^6404252551 is an apocalyptic number.

6404252551 is a deficient number, since it is larger than the sum of its proper divisors (96361513).

6404252551 is a wasteful number, since it uses less digits than its factorization.

6404252551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116721.

The product of its (nonzero) digits is 48000, while the sum is 34.

The square root of 6404252551 is about 80026.5740301308. The cubic root of 6404252551 is about 1857.0466630911.

Adding to 6404252551 its reverse (1552524046), we get a palindrome (7956776597).

The spelling of 6404252551 in words is "six billion, four hundred four million, two hundred fifty-two thousand, five hundred fifty-one".