6547222251 has 32 divisors (see below), whose sum is σ = 10216005120. Its totient is φ = 4135979232.

The previous prime is 6547222219. The next prime is 6547222273. The reversal of 6547222251 is 1522227456.

It is not a de Polignac number, because 6547222251 - 2⁵ = 6547222219 is a prime.

It is a super-2 number, since 2×6547222251² = 85732238407979014002, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (6547222151) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 17181 + ... + 115713.

It is an arithmetic number, because the mean of its divisors is an integer number (319250160).

Almost surely, 2^6547222251 is an apocalyptic number.

6547222251 is a deficient number, since it is larger than the sum of its proper divisors (3668782869).

6547222251 is a wasteful number, since it uses less digits than its factorization.

6547222251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98672 (or 98666 counting only the distinct ones).

The product of its digits is 67200, while the sum is 36.

The square root of 6547222251 is about 80914.9074707498. The cubic root of 6547222251 is about 1870.7641029804.

The spelling of 6547222251 in words is "six billion, five hundred forty-seven million, two hundred twenty-two thousand, two hundred fifty-one".