1100261 has 2 divisors, whose sum is σ = 1100262. Its totient is φ = 1100260.

The previous prime is 1100249. The next prime is 1100273. The reversal of 1100261 is 1620011.

It is a balanced prime because it is at equal distance from previous prime (1100249) and next prime (1100273).

It can be written as a sum of positive squares in only one way, i.e., 988036 + 112225 = 994^2 + 335^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1100261 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1100161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 550130 + 550131.

It is an arithmetic number, because the mean of its divisors is an integer number (550131).

2^1100261 is an apocalyptic number.

It is an amenable number.

1100261 is a deficient number, since it is larger than the sum of its proper divisors (1).

1100261 is an equidigital number, since it uses as much as digits as its factorization.

1100261 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12, while the sum is 11.

The square root of 1100261 is about 1048.9332676581. The cubic root of 1100261 is about 103.2361752973.

Adding to 1100261 its reverse (1620011), we get a palindrome (2720272).

The spelling of 1100261 in words is "one million, one hundred thousand, two hundred sixty-one".