6547012261 has 4 divisors (see below), whose sum is σ = 6831664992. Its totient is φ = 6262359532.

The previous prime is 6547012181. The next prime is 6547012271. The reversal of 6547012261 is 1622107456.

6547012261 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 a de Polignac number, because none of the positive numbers 2^k-6547012261 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 (6547012271) 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, 142326331 + ... + 142326376.

It is an arithmetic number, because the mean of its divisors is an integer number (1707916248).

Almost surely, 2^6547012261 is an apocalyptic number.

It is an amenable number.

6547012261 is a deficient number, since it is larger than the sum of its proper divisors (284652731).

6547012261 is a wasteful number, since it uses less digits than its factorization.

6547012261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 284652730.

The product of its (nonzero) digits is 20160, while the sum is 34.

The square root of 6547012261 is about 80913.6098626183. The cubic root of 6547012261 is about 1870.7441023379.

The spelling of 6547012261 in words is "six billion, five hundred forty-seven million, twelve thousand, two hundred sixty-one".