6539083121 has 4 divisors (see below), whose sum is σ = 6551586672. Its totient is φ = 6526579572.

The previous prime is 6539083091. The next prime is 6539083123. The reversal of 6539083121 is 1213809356.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 6539083121 - 2¹⁰ = 6539082097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6539083123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6250991 + ... + 6252036.

It is an arithmetic number, because the mean of its divisors is an integer number (1637896668).

Almost surely, 2^6539083121 is an apocalyptic number.

It is an amenable number.

6539083121 is a deficient number, since it is larger than the sum of its proper divisors (12503551).

6539083121 is a wasteful number, since it uses less digits than its factorization.

6539083121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12503550.

The product of its (nonzero) digits is 38880, while the sum is 38.

The square root of 6539083121 is about 80864.5974515424. The cubic root of 6539083121 is about 1869.9885727613.

The spelling of 6539083121 in words is "six billion, five hundred thirty-nine million, eighty-three thousand, one hundred twenty-one".