6506505231 has 4 divisors (see below), whose sum is σ = 8675340312. Its totient is φ = 4337670152.

The previous prime is 6506505211. The next prime is 6506505307. The reversal of 6506505231 is 1325056056.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6506505231 is a prime.

It is a super-2 number, since 2×6506505231² = 84669220642060726722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 6506505192 and 6506505201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6506505211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1084417536 + ... + 1084417541.

It is an arithmetic number, because the mean of its divisors is an integer number (2168835078).

Almost surely, 2^6506505231 is an apocalyptic number.

6506505231 is a deficient number, since it is larger than the sum of its proper divisors (2168835081).

6506505231 is a wasteful number, since it uses less digits than its factorization.

6506505231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2168835080.

The product of its (nonzero) digits is 27000, while the sum is 33.

The square root of 6506505231 is about 80662.9111240104. The cubic root of 6506505231 is about 1866.8779566562.

The spelling of 6506505231 in words is "six billion, five hundred six million, five hundred five thousand, two hundred thirty-one".