6531761 has 2 divisors, whose sum is σ = 6531762. Its totient is φ = 6531760.

The previous prime is 6531719. The next prime is 6531769. The reversal of 6531761 is 1671356.

6531761 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5640625 + 891136 = 2375^2 + 944^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6531761 is a prime.

It is a super-2 number, since 2×6531761² = 85327803522242, which contains 22 as substring.

It is a zygodrome in base 12.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6531769) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3265880 + 3265881.

It is an arithmetic number, because the mean of its divisors is an integer number (3265881).

Almost surely, 2^6531761 is an apocalyptic number.

It is an amenable number.

6531761 is a deficient number, since it is larger than the sum of its proper divisors (1).

6531761 is an equidigital number, since it uses as much as digits as its factorization.

6531761 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3780, while the sum is 29.

The square root of 6531761 is about 2555.7310108851. The cubic root of 6531761 is about 186.9290340499.

The spelling of 6531761 in words is "six million, five hundred thirty-one thousand, seven hundred sixty-one".