6551174261 has 2 divisors, whose sum is σ = 6551174262. Its totient is φ = 6551174260.

The previous prime is 6551174251. The next prime is 6551174291. The reversal of 6551174261 is 1624711556.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4867713361 + 1683460900 = 69769^2 + 41030^2 .

It is a cyclic number.

It is not a de Polignac number, because 6551174261 - 2²⁶ = 6484065397 is a prime.

It is a super-3 number, since 3×6551174261³ (a number of 30 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6551174251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3275587130 + 3275587131.

It is an arithmetic number, because the mean of its divisors is an integer number (3275587131).

Almost surely, 2^6551174261 is an apocalyptic number.

It is an amenable number.

6551174261 is a deficient number, since it is larger than the sum of its proper divisors (1).

6551174261 is an equidigital number, since it uses as much as digits as its factorization.

6551174261 is an evil number, because the sum of its binary digits is even.

The product of its digits is 50400, while the sum is 38.

The square root of 6551174261 is about 80939.3245647627. The cubic root of 6551174261 is about 1871.1404351658.

The spelling of 6551174261 in words is "six billion, five hundred fifty-one million, one hundred seventy-four thousand, two hundred sixty-one".