6534947251 has 8 divisors (see below), whose sum is σ = 7522242560. Its totient is φ = 5561084808.

The previous prime is 6534947239. The next prime is 6534947273. The reversal of 6534947251 is 1527494356.

It is a happy number.

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 6534947251 - 2¹⁷ = 6534816179 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6534947201) 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, 3357171 + ... + 3359116.

It is an arithmetic number, because the mean of its divisors is an integer number (940280320).

Almost surely, 2^6534947251 is an apocalyptic number.

6534947251 is a deficient number, since it is larger than the sum of its proper divisors (987295309).

6534947251 is a wasteful number, since it uses less digits than its factorization.

6534947251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6716433.

The product of its digits is 907200, while the sum is 46.

The square root of 6534947251 is about 80839.0205964916. The cubic root of 6534947251 is about 1869.5942432292.

The spelling of 6534947251 in words is "six billion, five hundred thirty-four million, nine hundred forty-seven thousand, two hundred fifty-one".