6501462221 has 2 divisors, whose sum is σ = 6501462222. Its totient is φ = 6501462220.

The previous prime is 6501462217. The next prime is 6501462223. The reversal of 6501462221 is 1222641056.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5459140996 + 1042321225 = 73886^2 + 32285^2 .

It is a cyclic number.

It is not a de Polignac number, because 6501462221 - 2² = 6501462217 is a prime.

It is a super-2 number, since 2×6501462221² = 84538022022180505682, which contains 22 as substring.

Together with 6501462223, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6501462223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3250731110 + 3250731111.

It is an arithmetic number, because the mean of its divisors is an integer number (3250731111).

Almost surely, 2^6501462221 is an apocalyptic number.

It is an amenable number.

6501462221 is a deficient number, since it is larger than the sum of its proper divisors (1).

6501462221 is an equidigital number, since it uses as much as digits as its factorization.

6501462221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 6501462221 is about 80631.6452827300. The cubic root of 6501462221 is about 1866.3955103828.

The spelling of 6501462221 in words is "six billion, five hundred one million, four hundred sixty-two thousand, two hundred twenty-one".