1136261 has 6 divisors (see below), whose sum is σ = 1321830. Its totient is φ = 973896.

The previous prime is 1136237. The next prime is 1136287. The reversal of 1136261 is 1626311.

1136261 = 4² + 5² + ... + 150².

It can be written as a sum of positive squares in only one way, i.e., 988036 + 148225 = 994^2 + 385^2 .

It is not a de Polignac number, because 1136261 - 2¹⁰ = 1135237 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 (1136221) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11546 + ... + 11643.

It is an arithmetic number, because the mean of its divisors is an integer number (220305).

2^1136261 is an apocalyptic number.

It is an amenable number.

1136261 is a deficient number, since it is larger than the sum of its proper divisors (185569).

1136261 is an equidigital number, since it uses as much as digits as its factorization.

1136261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23203 (or 23196 counting only the distinct ones).

The product of its digits is 216, while the sum is 20.

The square root of 1136261 is about 1065.9554399692. The cubic root of 1136261 is about 104.3500592995.

The spelling of 1136261 in words is "one million, one hundred thirty-six thousand, two hundred sixty-one".