6502221541 has 4 divisors (see below), whose sum is σ = 6575280300. Its totient is φ = 6429162784.

The previous prime is 6502221521. The next prime is 6502221547. The reversal of 6502221541 is 1451222056.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3570540516 + 2931681025 = 59754^2 + 54145^2 .

It is a cyclic number.

It is not a de Polignac number, because 6502221541 - 2⁷ = 6502221413 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 (6502221547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36529246 + ... + 36529423.

It is an arithmetic number, because the mean of its divisors is an integer number (1643820075).

Almost surely, 2^6502221541 is an apocalyptic number.

It is an amenable number.

6502221541 is a deficient number, since it is larger than the sum of its proper divisors (73058759).

6502221541 is an equidigital number, since it uses as much as digits as its factorization.

6502221541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73058758.

The product of its (nonzero) digits is 4800, while the sum is 28.

The square root of 6502221541 is about 80636.3537184067. The cubic root of 6502221541 is about 1866.4681676929.

Adding to 6502221541 its reverse (1451222056), we get a palindrome (7953443597).

The spelling of 6502221541 in words is "six billion, five hundred two million, two hundred twenty-one thousand, five hundred forty-one".