6261 has 4 divisors (see below), whose sum is σ = 8352. Its totient is φ = 4172.

The previous prime is 6257. The next prime is 6263. The reversal of 6261 is 1626.

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 6261 - 2² = 6257 is a prime.

It is a D-number.

It is a self number, because there is not a number n which added to its sum of digits gives 6261.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1041 + ... + 1046.

It is an arithmetic number, because the mean of its divisors is an integer number (2088).

2⁶²⁶¹ is an apocalyptic number.

It is an amenable number.

6261 is a deficient number, since it is larger than the sum of its proper divisors (2091).

6261 is a wasteful number, since it uses less digits than its factorization.

6261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2090.

The product of its digits is 72, while the sum is 15.

The square root of 6261 is about 79.1264810288. The cubic root of 6261 is about 18.4309576520.

Adding to 6261 its reverse (1626), we get a palindrome (7887).

The spelling of 6261 in words is "six thousand, two hundred sixty-one".