6501531229 has 2 divisors, whose sum is σ = 6501531230. Its totient is φ = 6501531228.

The previous prime is 6501531217. The next prime is 6501531247. The reversal of 6501531229 is 9221351056.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3598800100 + 2902731129 = 59990^2 + 53877^2 .

It is a cyclic number.

It is not a de Polignac number, because 6501531229 - 2²⁵ = 6467976797 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6501531194 and 6501531203.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6501531269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3250765614 + 3250765615.

It is an arithmetic number, because the mean of its divisors is an integer number (3250765615).

Almost surely, 2^6501531229 is an apocalyptic number.

It is an amenable number.

6501531229 is a deficient number, since it is larger than the sum of its proper divisors (1).

6501531229 is an equidigital number, since it uses as much as digits as its factorization.

6501531229 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16200, while the sum is 34.

The square root of 6501531229 is about 80632.0732029135. The cubic root of 6501531229 is about 1866.4021138084.

The spelling of 6501531229 in words is "six billion, five hundred one million, five hundred thirty-one thousand, two hundred twenty-nine".