11261945 has 4 divisors (see below), whose sum is σ = 13514340. Its totient is φ = 9009552.

The previous prime is 11261941. The next prime is 11261951. The reversal of 11261945 is 54916211.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3286969 + 7974976 = 1813^2 + 2824^2 .

It is a cyclic number.

It is not a de Polignac number, because 11261945 - 2² = 11261941 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11261941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1126190 + ... + 1126199.

It is an arithmetic number, because the mean of its divisors is an integer number (3378585).

Almost surely, 2^11261945 is an apocalyptic number.

It is an amenable number.

11261945 is a deficient number, since it is larger than the sum of its proper divisors (2252395).

11261945 is an equidigital number, since it uses as much as digits as its factorization.

11261945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2252394.

The product of its digits is 2160, while the sum is 29.

The square root of 11261945 is about 3355.8821493014. The cubic root of 11261945 is about 224.1495135428.

The spelling of 11261945 in words is "eleven million, two hundred sixty-one thousand, nine hundred forty-five".